Charleston Green Color Codes
Charleston Green is a very dark, desaturated teal with the hex code #232B2B, RGB values of 35, 43, 43 and an HSL value of hsl(180, 10%, 15%).
| HEX | #232B2B |
|---|---|
| RGB | 35, 43, 43 |
| HSL | hsl(180, 10%, 15%) |
| HSV | 180°, 19%, 17% |
| CMYK | 19%, 0%, 0%, 83% |
| LAB | 16.79, -3.48, -1.17 |
| CIELCHuv | 16.79, 3.47, 192.17° |
- Nearest Pantone
- PMS 426 C ΔE 4.2 · approximate
- Nearest CSS name
-
darkslategrayΔE 16.8
Community source color-name-list, community color-name index
Charleston Green Color Hex Code
The Charleston Green color hex code is #232B2B. Those six digits are three pairs, 23 for red, 2B for green and 2B for blue, which is the same triplet a browser reads from the CSS value below.
#232B2B
Charleston Green Color RGB Code
The Charleston Green RGB code is rgb(35, 43, 43). Green carries the most light at 43 of 255, which is what puts this color where it sits on the wheel.
rgb(35, 43, 43)
Charleston Green Color HSV Code
The Charleston Green HSV code is 180°, 19%, 17%. Read it as a hue of 180 degrees, 19% saturation and 17% value, which is the form most color pickers use because moving one number changes one thing.
180°, 19%, 17%
Charleston Green Color CIELChuv Code
The Charleston Green CIELCHuv code is 16.79, 3.47, 192.17°. Unlike hex or RGB this one is perceptual: lightness 17 means dark to the eye rather than to the screen, and chroma 3 is how far it sits from grey.
16.79, 3.47, 192.17°
Tonal scale
What are Charleston Green Color Palettes?
A shade mixes toward black, a tint toward white, a tone toward grey. Every step keeps the hue and is copy-ready.
Shades, toward black
Tints, toward white
Tones, toward grey
Palettes
What are Charleston Green Color Palette Codes?
Each of these is a hue rotation from #232B2B. They are generated, not curated, so they are exact.
Complementary
The opposite hue is #2B2323, a very dark, desaturated red. Complements carry the strongest contrast of any two-color scheme, so this pair suits a call to action better than a background. Neither is especially saturated, so this pairing stays calm enough for large areas of both.
Analogous
Its two neighbours are #232B27 and #23272B. Because they overlap heavily in hue, nothing in the group competes, and the eye reads the whole set as a single color with variation.
Triadic
#2B232B and #2B2B23 complete an even 120 degree split. Three fully independent hues, so one has to lead: keep this base dominant and let the other two appear in small quantities.
Split-complementary
Instead of the direct complement, this takes the two hues either side of it: #2B2327 and #2B2723. Almost the same contrast, without the edge shimmer a true complementary pair produces at high saturation.
Tetradic
Two complementary pairs forming a rectangle: this base with #2B2323, and #27232B with #272B23. The richest of the five and the hardest to balance, so treat this base as the lead and hold the other three well back.
Accessibility
Contrast checker: is Charleston Green accessible?
Measured against white and against black, with a separate verdict for each element type. Small text, large text and UI components have different thresholds, so one pass or fail for the whole color would be wrong roughly a third of the time.
White background
14.46:114.46
contrast ratio on white background
| Element | AA | AAA |
|---|---|---|
| Small text needs 4.5:1 / 7:1 | Passes | Passes |
| Large text needs 3:1 / 4.5:1 | Passes | Passes |
| UI component needs 3:1 | Passes | n/a |
Black background
1.45:11.45
contrast ratio on black background
| Element | AA | AAA |
|---|---|---|
| Small text needs 4.5:1 / 7:1 | Fails | Fails |
| Large text needs 3:1 / 4.5:1 | Fails | Fails |
| UI component needs 3:1 | Fails | n/a |
Charleston Green clears WCAG AA against white at 14.46:1, so it is safe for body copy as well as headings. Text placed on it should be white, which gives 14.46:1. With very little saturation it behaves as a neutral, which makes it a good background or a supporting tone alongside a stronger accent.
Color vision
How Charleston Green looks with color blindness
Around 300 million people see color differently from the way it is specified. Each card shows the actual color beside how it appears, and how common that form of vision is.
Protanopia
About 1% of men#27272B
Charleston Green shifts slightly here. ΔE 4.8
No working red cones. Reds darken sharply and drift toward the same muddy olive as green.
Deuteranopia
About 1% of men#26262B
Charleston Green shifts slightly here. ΔE 5.4
No working green cones. With the milder deuteranomaly at nearer 6% of men, this is by far the most common form, and the one worth designing around.
Tritanopia
About 1 in 10,000#232B2B
Charleston Green holds up almost unchanged here. ΔE 0.0
No working blue cones. Blues shift toward green and yellows toward pink. Rare, and unlike the others it is not sex-linked, so it affects men and women equally.
Achromatopsia
About 1 in 30,000#292929
Charleston Green shifts slightly here. ΔE 3.7
No color vision at all. Also a fair proxy for how the color survives a greyscale print or a failing screen.
Charleston Green is stable under the common forms of color blindness: to a deuteranope it reads as #26262B, a shift of only ΔE 5.4, which is close to imperceptible. The widest shift is under deuteranopia, at ΔE 5.4. The rule this leads to needs no simulator: never let color be the only thing carrying a message. Add a label, an icon, or a clear difference in lightness, and the problem disappears for everyone.
Snippets
Using Charleston Green in code
:root {
--charleston-green: #232B2B;
}
.example {
color: var(--charleston-green);
}// tailwind.config.js
theme: {
extend: {
colors: {
'charleston-green': '#232B2B',
},
},
}// SwiftUI takes 0–1 components, not 0–255.
let charlestonGreen = Color(
red: 0.137,
green: 0.169,
blue: 0.169
)<!-- res/values/colors.xml -->
<color name="charleston_green">#232B2B</color>// Flutter wants ARGB: FF for full opacity, then the hex.
const charlestonGreen = Color(0xFF232B2B);