#90D4EF
Closest named color: Sky Blue (#87CEEB). oklch(83.4% 0.078 224.9), rgb(144, 212, 239).
Aa
Black text reads best on this color (12.84:1).
About this color
#90D4EF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 83%, its chroma 0.078 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Sky Blue (#87CEEB), ΔE 0.020 away. Black text reads best on it, at 12.84:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Sky Blue (#87CEEB) |
| Black text | 12.84:1 |
| White text | 1.63:1 |
Values
| HEX | #90D4EF |
| RGB | rgb(144, 212, 239) |
| HSL | hsl(197, 75%, 75%) |
| OKLCH | oklch(83.4% 0.078 224.9) |
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 #90D4EF | 1.63:1 | Fails | Lc -31.8 | Non-text elements, placeholder text |
| Black text on #90D4EF | 12.84:1 | AAA | Lc 75.6 | Fine for body text |
| #90D4EF text on white | 1.63:1 | Fails | Lc 28.2 | Dividers and decoration only |
| #90D4EF text on black | 12.84:1 | AAA | Lc -74.8 | 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
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#DBEDF5
oklch(93.5% 0.022 226.1)
-
Step 200
200
#BCE0EF
oklch(88.6% 0.043 225)
-
Step 300
300 (this color)
#90D4EF
oklch(83.4% 0.078 224.9)
-
Step 400
400
#28B0DB
oklch(70.7% 0.125 225.1)
-
Step 500
500
#0098BF
oklch(63.2% 0.119 224.4)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#90D4EF 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) | #C5D1F0 | 0.062 |
| Deuteranopia (no green cones) | #B7C6EF | 0.055 |
| Tritanopia (no blue cones) | #6ADCDC | 0.053 |
| Achromatopsia (no color) | #CACACA | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90D4EF
#90D4EF
oklch(83.4% 0.078 224.9)
- #F5B99F
#F5B99F
oklch(83.4% 0.078 44.5)
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 #90D4EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sky Blue #87CEEB ΔE 0.020
- Light Sky Blue #87CEFA ΔE 0.028
- Baby Blue #A2CFFE ΔE 0.035
- Light Blue #ADD8E6 ΔE 0.037
- Sky #82CAFC ΔE 0.041
- Celeste #A8DADC ΔE 0.043
- Lightblue #7BC8F6 ΔE 0.044
- Light Blue Grey #B7C9E2 ΔE 0.049
Use #90D4EF 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.