#90D9FF
Closest named color: Baby Blue (#A2CFFE). oklch(85.1% 0.09 231.9), rgb(144, 217, 255).
Aa
Black text reads best on this color (13.55:1).
About this color
#90D9FF is a light, moderately saturated blue. In OKLCH its lightness is 85%, its chroma 0.090 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Baby Blue (#A2CFFE), ΔE 0.030 away. Black text reads best on it, at 13.55:1.
| Hue family | Blues |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Baby Blue (#A2CFFE) |
| Black text | 13.55:1 |
| White text | 1.54:1 |
Values
| HEX | #90D9FF |
| RGB | rgb(144, 217, 255) |
| HSL | hsl(201, 100%, 78%) |
| OKLCH | oklch(85.1% 0.09 231.9) |
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 #90D9FF | 1.54:1 | Fails | Lc -28.5 | Dividers and decoration only |
| Black text on #90D9FF | 13.55:1 | AAA | Lc 78.6 | Fine for body text |
| #90D9FF text on white | 1.54:1 | Fails | Lc 25.2 | Dividers and decoration only |
| #90D9FF text on black | 13.55:1 | AAA | Lc -77.9 | 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)
#90D9FF
oklch(85.1% 0.09 231.9)
-
Step 300
300
#6ACEFE
oklch(80.9% 0.116 231.4)
-
Step 400
400
#00AFEA
oklch(70.8% 0.144 231.6)
-
Step 500
500
#0096C9
oklch(63.2% 0.128 231.5)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005676
oklch(42.6% 0.087 232.3)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#90D9FF 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) | #C7D7FF | 0.062 |
| Deuteranopia (no green cones) | #B7CAFE | 0.055 |
| Tritanopia (no blue cones) | #60E3E5 | 0.067 |
| Achromatopsia (no color) | #D0D0D0 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90D9FF
#90D9FF
oklch(85.1% 0.09 231.9)
- #FEBE98
#FEBE98
oklch(85.1% 0.09 51.8)
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 #90D9FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Baby Blue #A2CFFE ΔE 0.030
- Light Sky Blue #87CEFA ΔE 0.032
- Sky Blue #87CEEB ΔE 0.038
- Light Blue #ADD8E6 ΔE 0.044
- Sky #82CAFC ΔE 0.044
- Lightblue #7BC8F6 ΔE 0.052
- Celeste #A8DADC ΔE 0.054
- Powder Blue #B0E0E6 ΔE 0.056
Use #90D9FF 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.