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Seashell Color Codes

Seashell is an off-white with the hex code #FFF5EE, RGB values of 255, 245, 238 and an HSL value of hsl(25, 100%, 97%).

HEX#FFF5EE
RGB255, 245, 238
HSLhsl(25, 100%, 97%)
HSV25°, 7%, 100%
CMYK0%, 4%, 7%, 0%
LAB97.12, 2.16, 4.55
CIELCHuv97.12, 8.99, 46.86°
Nearest Pantone
PMS 705 C ΔE 9.7 · approximate
Nearest CSS name
seashell ΔE 0.0

Source CSS Color Module Level 4 keyword 'SeaShell'

Seashell Color Hex Code

The Seashell color hex code is #FFF5EE. Those six digits are three pairs, FF for red, F5 for green and EE for blue, which is the same triplet a browser reads from the CSS value below.

#FFF5EE

Seashell Color RGB Code

The Seashell RGB code is rgb(255, 245, 238). Red carries the most light at 255 of 255, which is what puts this color where it sits on the wheel.

rgb(255, 245, 238)

Seashell Color HSV Code

The Seashell HSV code is 25°, 7%, 100%. Read it as a hue of 25 degrees, 7% saturation and 100% value, which is the form most color pickers use because moving one number changes one thing.

25°, 7%, 100%

Seashell Color CIELChuv Code

The Seashell CIELCHuv code is 97.12, 8.99, 46.86°. Unlike hex or RGB this one is perceptual: lightness 97 means light to the eye rather than to the screen, and chroma 9 is how far it sits from grey.

97.12, 8.99, 46.86°

Tonal scale

What are Seashell 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

Open in the shades & tints generator →

Palettes

What are Seashell Color Palette Codes?

Each of these is a hue rotation from #FFF5EE. They are generated, not curated, so they are exact.

Complementary

Directly opposite sits #EEF8FF, an off-white. No other pairing separates two hues further, so this is the one to reach for when a single element has to win attention. Both are saturated, so give the complement much less area than the base or the two will fight.

Analogous

#FFEEF0 and #FFFEEE sit 30 degrees either side. All three share most of their hue, so the set reads as one family instead of three separate decisions. Good for backgrounds and for state variations that should not announce themselves.

Triadic

#EEFFF5 and #F5EEFF 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: #EEFFFE and #EEF0FF. 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 #EEF8FF, and #F0FFEE with #FEEEFF. The richest of the five and the hardest to balance, so treat the darkest of the four as the lead and hold the other three well back.

See these on the color wheel →

Accessibility

Contrast checker: is Seashell 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

1.07:1

1.07

contrast ratio on white background

ElementAAAAA
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

Black background

19.55:1

19.55

contrast ratio on black background

ElementAAAAA
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

At 1.07:1 against white, Seashell is a fill color rather than a text color. Use it for surfaces, borders and large display type, and set the copy in ink. Text placed on it should be black, which gives 19.55:1. It is a highly saturated color, so it will dominate anything it sits beside. Give it space rather than surrounding it with other strong colors.

Check Seashell against another color →

Color vision

How Seashell 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
actual

#FBFBF0

Seashell shifts slightly here. ΔE 4.3

No working red cones. Reds darken sharply and drift toward the same muddy olive as green.

Deuteranopia

About 1% of men
actual

#FBFCF0

Seashell shifts slightly here. ΔE 4.9

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
actual

#FFF1F1

Seashell shifts slightly here. ΔE 3.9

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
actual

#F7F7F7

Seashell shifts slightly here. ΔE 5.0

No color vision at all. Also a fair proxy for how the color survives a greyscale print or a failing screen.

Seashell is stable under the common forms of color blindness: to a deuteranope it reads as #FBFCF0, a shift of only ΔE 4.9, which is close to imperceptible. It sits in the red end of the spectrum, which is exactly where red-green deficiency does its damage. Never pair it with a green of similar lightness to signal a difference in meaning: to a large minority the two become one color. The widest shift is under deuteranopia, at ΔE 4.9. 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.

Simulate a whole palette →

Snippets

Using Seashell in code

:root {
  --seashell: #FFF5EE;
}

.example {
  color: var(--seashell);
}