#90CDF4
Closest named color: Light Sky Blue (#87CEFA). oklch(82.1% 0.083 237.2), rgb(144, 205, 244).
Aa
Black text reads best on this color (12.22:1).
About this color
#90CDF4 is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.083 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sky Blue (#87CEFA), ΔE 0.011 away. Black text reads best on it, at 12.22:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Light Sky Blue (#87CEFA) |
| Black text | 12.22:1 |
| White text | 1.71:1 |
Values
| HEX | #90CDF4 |
| RGB | rgb(144, 205, 244) |
| HSL | hsl(203, 82%, 76%) |
| OKLCH | oklch(82.1% 0.083 237.2) |
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 #90CDF4 | 1.71:1 | Fails | Lc -34.7 | Non-text elements, placeholder text |
| Black text on #90CDF4 | 12.22:1 | AAA | Lc 73.0 | Content text, not long reading |
| #90CDF4 text on white | 1.71:1 | Fails | Lc 30.9 | Non-text elements, placeholder text |
| #90CDF4 text on black | 12.22:1 | AAA | Lc -71.9 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DCEDF8
oklch(93.7% 0.023 236)
-
Step 200
200
#BDDEF4
oklch(88.4% 0.046 237.3)
-
Step 300
300 (this color)
#90CDF4
oklch(82.1% 0.083 237.2)
-
Step 400
400
#3BACE9
oklch(70.8% 0.133 237)
-
Step 500
500
#0094D2
oklch(63.2% 0.138 237.1)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
Step 700
700
#006896
oklch(49.1% 0.108 237.6)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#90CDF4 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) | #BBCCF6 | 0.050 |
| Deuteranopia (no green cones) | #AEC1F3 | 0.044 |
| Tritanopia (no blue cones) | #69D7DA | 0.064 |
| Achromatopsia (no color) | #C5C5C5 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90CDF4
#90CDF4
oklch(82.1% 0.083 237.2)
- #EEB78F
#EEB78F
oklch(82% 0.083 57.3)
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 #90CDF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sky Blue #87CEFA ΔE 0.011
- Sky Blue #87CEEB ΔE 0.018
- Sky #82CAFC ΔE 0.021
- Baby Blue #A2CFFE ΔE 0.026
- Lightblue #7BC8F6 ΔE 0.027
- Light Cornflower Blue #98C1D9 ΔE 0.042
- Light Steel Blue #B0C4DE ΔE 0.045
- Pastel Blue #A2BFFE ΔE 0.047
Use #90CDF4 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.