#90D8FF
Closest named color: Baby Blue (#A2CFFE). oklch(84.9% 0.09 233), rgb(144, 216, 255).
Aa
Black text reads best on this color (13.45:1).
About this color
#90D8FF is a light, moderately saturated blue. In OKLCH its lightness is 85%, its chroma 0.090 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Baby Blue (#A2CFFE), ΔE 0.028 away. Black text reads best on it, at 13.45:1.
| Hue family | Blues |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Baby Blue (#A2CFFE) |
| Black text | 13.45:1 |
| White text | 1.56:1 |
Values
| HEX | #90D8FF |
| RGB | rgb(144, 216, 255) |
| HSL | hsl(201, 100%, 78%) |
| OKLCH | oklch(84.9% 0.09 233) |
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 #90D8FF | 1.56:1 | Fails | Lc -29.0 | Dividers and decoration only |
| Black text on #90D8FF | 13.45:1 | AAA | Lc 78.2 | Fine for body text |
| #90D8FF text on white | 1.56:1 | Fails | Lc 25.6 | Dividers and decoration only |
| #90D8FF text on black | 13.45:1 | AAA | Lc -77.5 | 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
#ECF8FE
oklch(97.2% 0.015 229)
-
Step 100
100
#D5EEFD
oklch(93.5% 0.033 234.1)
-
Step 200
200 (this color)
#90D8FF
oklch(84.9% 0.09 233)
-
Step 300
300
#6CCDFF
oklch(80.8% 0.116 233.2)
-
Step 400
400
#00AEEC
oklch(70.6% 0.146 233.1)
-
Step 500
500
#0095CB
oklch(63% 0.131 233.2)
-
Step 600
600
#007DAB
oklch(55.5% 0.115 233.2)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#002A3D
oklch(26.9% 0.056 233.8)
#90D8FF 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) | #C5D6FF | 0.060 |
| Deuteranopia (no green cones) | #B6C9FE | 0.054 |
| Tritanopia (no blue cones) | #61E3E5 | 0.068 |
| Achromatopsia (no color) | #CFCFCF | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90D8FF
#90D8FF
oklch(84.9% 0.09 233)
- #FDBD96
#FDBD96
oklch(84.8% 0.09 52.5)
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 #90D8FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Baby Blue #A2CFFE ΔE 0.028
- Light Sky Blue #87CEFA ΔE 0.029
- Sky Blue #87CEEB ΔE 0.037
- Sky #82CAFC ΔE 0.042
- Light Blue #ADD8E6 ΔE 0.045
- Lightblue #7BC8F6 ΔE 0.050
- Celeste #A8DADC ΔE 0.055
- Powder Blue #B0E0E6 ΔE 0.057
Use #90D8FF 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.