#90D1EF
Closest named color: Sky Blue (#87CEEB). oklch(82.8% 0.078 228.5), rgb(144, 209, 239).
Aa
Black text reads best on this color (12.55:1).
About this color
#90D1EF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 83%, its chroma 0.078 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Sky Blue (#87CEEB), ΔE 0.014 away. Black text reads best on it, at 12.55:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Sky Blue (#87CEEB) |
| Black text | 12.55:1 |
| White text | 1.67:1 |
Values
| HEX | #90D1EF |
| RGB | rgb(144, 209, 239) |
| HSL | hsl(199, 75%, 75%) |
| OKLCH | oklch(82.8% 0.078 228.5) |
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 #90D1EF | 1.67:1 | Fails | Lc -33.2 | Non-text elements, placeholder text |
| Black text on #90D1EF | 12.55:1 | AAA | Lc 74.4 | Content text, not long reading |
| #90D1EF text on white | 1.67:1 | Fails | Lc 29.4 | Dividers and decoration only |
| #90D1EF text on black | 12.55:1 | AAA | Lc -73.4 | Content text, not long reading |
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 300.
-
Step 50
50
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DBEDF6
oklch(93.5% 0.023 229.1)
-
Step 200
200
#BDDFF0
oklch(88.4% 0.043 229.5)
-
Step 300
300 (this color)
#90D1EF
oklch(82.8% 0.078 228.5)
-
Step 400
400
#32AFDE
oklch(70.8% 0.125 228.4)
-
Step 500
500
#0097C4
oklch(63.2% 0.123 228.1)
-
Step 600
600
#007FA6
oklch(55.7% 0.109 228.5)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004860
oklch(37.5% 0.074 228.7)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#90D1EF 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) | #C2CEF1 | 0.059 |
| Deuteranopia (no green cones) | #B4C3EF | 0.053 |
| Tritanopia (no blue cones) | #6BDADA | 0.056 |
| Achromatopsia (no color) | #C8C8C8 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90D1EF
#90D1EF
oklch(82.8% 0.078 228.5)
- #F1B89A
#F1B89A
oklch(82.7% 0.078 49)
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 #90D1EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sky Blue #87CEEB ΔE 0.014
- Light Sky Blue #87CEFA ΔE 0.022
- Baby Blue #A2CFFE ΔE 0.032
- Sky #82CAFC ΔE 0.034
- Lightblue #7BC8F6 ΔE 0.037
- Light Blue #ADD8E6 ΔE 0.042
- Light Cornflower Blue #98C1D9 ΔE 0.045
- Light Steel Blue #B0C4DE ΔE 0.046
Use #90D1EF 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.