#90DEE4
Closest named color: Celeste (#A8DADC). oklch(85.2% 0.077 202), rgb(144, 222, 228).
Aa
Black text reads best on this color (13.75:1).
About this color
#90DEE4 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.077 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Celeste (#A8DADC), ΔE 0.026 away. Black text reads best on it, at 13.75:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Celeste (#A8DADC) |
| Black text | 13.75:1 |
| White text | 1.52:1 |
Values
| HEX | #90DEE4 |
| RGB | rgb(144, 222, 228) |
| HSL | hsl(184, 61%, 73%) |
| OKLCH | oklch(85.2% 0.077 202) |
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 #90DEE4 | 1.52:1 | Fails | Lc -27.6 | Dividers and decoration only |
| Black text on #90DEE4 | 13.75:1 | AAA | Lc 79.4 | Fine for body text |
| #90DEE4 text on white | 1.52:1 | Fails | Lc 24.3 | Dividers and decoration only |
| #90DEE4 text on black | 13.75:1 | AAA | Lc -78.8 | 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
#ECF8F9
oklch(97% 0.013 202.9)
-
Step 100
100
#D5F0F2
oklch(93.6% 0.028 202.1)
-
Step 200
200 (this color)
#90DEE4
oklch(85.2% 0.077 202)
-
Step 300
300
#69D4DC
oklch(81% 0.099 201.9)
-
Step 400
400
#00B6C0
oklch(70.7% 0.12 201.8)
-
Step 500
500
#009CA5
oklch(63.1% 0.107 202)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#90DEE4 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) | #D3D8E5 | 0.078 |
| Deuteranopia (no green cones) | #C4CCE5 | 0.073 |
| Tritanopia (no blue cones) | #6EE4E0 | 0.034 |
| Achromatopsia (no color) | #D1D1D1 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90DEE4
#90DEE4
oklch(85.2% 0.077 202)
- #FDBBB8
#FDBBB8
oklch(85.2% 0.077 21.8)
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 #90DEE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Celeste #A8DADC ΔE 0.026
- Light Blue #ADD8E6 ΔE 0.034
- Powder Blue #B0E0E6 ΔE 0.036
- Robin's Egg #6DEDFD ΔE 0.047
- Robin's Egg Blue #98EFF9 ΔE 0.049
- Sky Blue #87CEEB ΔE 0.050
- Robin Egg Blue #8AF1FE ΔE 0.053
- Tiffany Blue #94D2BD ΔE 0.054
Use #90DEE4 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.