#90B5EB
Closest named color: Carolina Blue (#8AB8FE). oklch(76.6% 0.088 257.7), rgb(144, 181, 235).
Aa
Black text reads best on this color (9.99:1).
About this color
#90B5EB is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.088 and its hue 258°. 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 9.99:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.99:1 |
| White text | 2.10:1 |
Values
| HEX | #90B5EB |
| RGB | rgb(144, 181, 235) |
| HSL | hsl(216, 69%, 74%) |
| OKLCH | oklch(76.6% 0.088 257.7) |
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 #90B5EB | 2.10:1 | Fails | Lc -45.7 | Large or bold text, headings |
| Black text on #90B5EB | 9.99:1 | AAA | Lc 62.9 | Content text, not long reading |
| #90B5EB text on white | 2.10:1 | Fails | Lc 41.1 | Non-text elements, placeholder text |
| #90B5EB text on black | 9.99:1 | AAA | Lc -61.2 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300 (this color)
#90B5EB
oklch(76.6% 0.088 257.7)
-
Step 400
400
#66A1F7
oklch(70.6% 0.141 257.8)
-
Step 500
500
#3A87F3
oklch(63.1% 0.179 257.6)
-
Step 600
600
#0F6DE2
oklch(55.5% 0.195 257.8)
-
Step 700
700
#005BC4
oklch(49.2% 0.18 257.7)
-
Step 800
800
#074B9F
oklch(42.8% 0.15 257.7)
-
Step 900
900
#123F7E
oklch(37.6% 0.117 258)
-
Step 950
950
#0C264A
oklch(27.1% 0.074 257.4)
#90B5EB 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) | #A1B8ED | 0.023 |
| Deuteranopia (no green cones) | #97AFEA | 0.017 |
| Tritanopia (no blue cones) | #71C1C7 | 0.079 |
| Achromatopsia (no color) | #B3B3B3 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B5EB
#90B5EB
oklch(76.6% 0.088 257.7)
- #D2AC72
#D2AC72
oklch(76.5% 0.087 77.4)
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 #90B5EB, 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 0.043
- Light Grey Blue #9DBCD4 ΔE 0.046
- Light Cornflower Blue #98C1D9 ΔE 0.049
- Lightblue #7BC8F6 ΔE 0.051
- Sky #82CAFC ΔE 0.055
- Cloudy Blue #ACC2D9 ΔE 0.062
- Light Sky Blue #87CEFA ΔE 0.064
Use #90B5EB 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.