#81DEF4
Closest named color: Robin's Egg (#6DEDFD). oklch(85.1% 0.094 214.7), rgb(129, 222, 244).
Aa
Black text reads best on this color (13.68:1).
About this color
#81DEF4 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.094 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg (#6DEDFD), ΔE 0.039 away. Black text reads best on it, at 13.68:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 13.68:1 |
| White text | 1.53:1 |
Values
| HEX | #81DEF4 |
| RGB | rgb(129, 222, 244) |
| HSL | hsl(191, 84%, 73%) |
| OKLCH | oklch(85.1% 0.094 214.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #81DEF4 | 1.53:1 | Fails | Lc -27.8 | Dividers and decoration only |
| Black text on #81DEF4 | 13.68:1 | AAA | Lc 79.2 | Fine for body text |
| #81DEF4 text on white | 1.53:1 | Fails | Lc 24.6 | Dividers and decoration only |
| #81DEF4 text on black | 13.68:1 | AAA | Lc -78.6 | Fine for body text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 200.
-
Step 50
50
#EAF9FC
oklch(97.2% 0.016 211)
-
Step 100
100
#D1F0F8
oklch(93.5% 0.034 215)
-
Step 200
200 (this color)
#81DEF4
oklch(85.1% 0.094 214.7)
-
Step 300
300
#4FD4F1
oklch(80.9% 0.12 215.1)
-
Step 400
400
#00B4D1
oklch(70.8% 0.125 214.7)
-
Step 500
500
#009AB3
oklch(63.1% 0.111 214.6)
-
Step 600
600
#008197
oklch(55.5% 0.098 215.2)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#81DEF4 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #CED8F5 | 0.085 |
| Deuteranopia (no green cones) | #BCCBF4 | 0.077 |
| Tritanopia (no blue cones) | #44E7E5 | 0.054 |
| Achromatopsia (no color) | #D1D1D1 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81DEF4
#81DEF4
oklch(85.1% 0.094 214.7)
- #FFBBAA
#FFBBAA
oklch(85% 0.083 34.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #81DEF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg #6DEDFD ΔE 0.039
- Sky Blue #87CEEB ΔE 0.041
- Light Blue #ADD8E6 ΔE 0.045
- Celeste #A8DADC ΔE 0.046
- Light Sky Blue #87CEFA ΔE 0.047
- Powder Blue #B0E0E6 ΔE 0.051
- Robin Egg Blue #8AF1FE ΔE 0.052
- Robin's Egg Blue #98EFF9 ΔE 0.053
Use #81DEF4 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.