#90B4EB
Closest named color: Carolina Blue (#8AB8FE). oklch(76.4% 0.089 258.7), rgb(144, 180, 235).
Aa
Black text reads best on this color (9.91:1).
About this color
#90B4EB is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.089 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.027 away. Black text reads best on it, at 9.91:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.91:1 |
| White text | 2.11:1 |
Values
| HEX | #90B4EB |
| RGB | rgb(144, 180, 235) |
| HSL | hsl(216, 69%, 74%) |
| OKLCH | oklch(76.4% 0.089 258.7) |
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 #90B4EB | 2.11:1 | Fails | Lc -46.1 | Large or bold text, headings |
| Black text on #90B4EB | 9.91:1 | AAA | Lc 62.5 | Content text, not long reading |
| #90B4EB text on white | 2.11:1 | Fails | Lc 41.5 | Non-text elements, placeholder text |
| #90B4EB text on black | 9.91:1 | AAA | Lc -60.8 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300 (this color)
#90B4EB
oklch(76.4% 0.089 258.7)
-
Step 400
400
#68A1F8
oklch(70.8% 0.142 258.6)
-
Step 500
500
#3D86F5
oklch(63.1% 0.182 258.8)
-
Step 600
600
#176CE4
oklch(55.6% 0.198 258.9)
-
Step 700
700
#065AC6
oklch(49.2% 0.183 258.6)
-
Step 800
800
#0C4AA0
oklch(42.7% 0.152 258.7)
-
Step 900
900
#143F7F
oklch(37.7% 0.118 258.7)
-
Step 950
950
#0D254A
oklch(26.9% 0.075 258.9)
#90B4EB 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) | #A0B7ED | 0.022 |
| Deuteranopia (no green cones) | #96AEEA | 0.016 |
| Tritanopia (no blue cones) | #71C0C7 | 0.079 |
| Achromatopsia (no color) | #B2B2B2 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B4EB
#90B4EB
oklch(76.4% 0.089 258.7)
- #D1AC70
#D1AC70
oklch(76.4% 0.089 78.9)
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 #90B4EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.027
- Pastel Blue #A2BFFE ΔE 0.044
- Light Grey Blue #9DBCD4 ΔE 0.048
- Light Cornflower Blue #98C1D9 ΔE 0.052
- Lightblue #7BC8F6 ΔE 0.053
- Sky #82CAFC ΔE 0.057
- Cloudy Blue #ACC2D9 ΔE 0.064
- Light Sky Blue #87CEFA ΔE 0.067
Use #90B4EB 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.