#90CBF4
Closest named color: Light Sky Blue (#87CEFA). oklch(81.6% 0.084 239.4), rgb(144, 203, 244).
Aa
Black text reads best on this color (12.03:1).
About this color
#90CBF4 is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.084 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sky Blue (#87CEFA), ΔE 0.012 away. Black text reads best on it, at 12.03:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Light Sky Blue (#87CEFA) |
| Black text | 12.03:1 |
| White text | 1.74:1 |
Values
| HEX | #90CBF4 |
| RGB | rgb(144, 203, 244) |
| HSL | hsl(205, 82%, 76%) |
| OKLCH | oklch(81.6% 0.084 239.4) |
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 #90CBF4 | 1.74:1 | Fails | Lc -35.6 | Non-text elements, placeholder text |
| Black text on #90CBF4 | 12.03:1 | AAA | Lc 72.2 | Content text, not long reading |
| #90CBF4 text on white | 1.74:1 | Fails | Lc 31.7 | Non-text elements, placeholder text |
| #90CBF4 text on black | 12.03:1 | AAA | Lc -71.0 | 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
#DCEDF9
oklch(93.7% 0.024 238.4)
-
Step 200
200
#BEDEF5
oklch(88.5% 0.046 239.3)
-
Step 300
300 (this color)
#90CBF4
oklch(81.6% 0.084 239.4)
-
Step 400
400
#40ABEB
oklch(70.8% 0.134 239.3)
-
Step 500
500
#0093D6
oklch(63.1% 0.143 239.3)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006899
oklch(49.2% 0.111 239.3)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950
#002A41
oklch(27.1% 0.061 239)
#90CBF4 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) | #B9CAF6 | 0.048 |
| Deuteranopia (no green cones) | #ACBFF3 | 0.042 |
| Tritanopia (no blue cones) | #69D5D8 | 0.067 |
| Achromatopsia (no color) | #C4C4C4 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90CBF4
#90CBF4
oklch(81.6% 0.084 239.4)
- #ECB68C
#ECB68C
oklch(81.6% 0.084 59.1)
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 #90CBF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sky Blue #87CEFA ΔE 0.012
- Sky #82CAFC ΔE 0.018
- Sky Blue #87CEEB ΔE 0.020
- Lightblue #7BC8F6 ΔE 0.024
- Baby Blue #A2CFFE ΔE 0.027
- Light Cornflower Blue #98C1D9 ΔE 0.040
- Pastel Blue #A2BFFE ΔE 0.043
- Light Steel Blue #B0C4DE ΔE 0.044
Use #90CBF4 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.