#90B9E4
Closest named color: Light Grey Blue (#9DBCD4). oklch(77.2% 0.076 250), rgb(144, 185, 228).
Aa
Black text reads best on this color (10.24:1).
About this color
#90B9E4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.076 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.031 away. Black text reads best on it, at 10.24:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.24:1 |
| White text | 2.04:1 |
Values
| HEX | #90B9E4 |
| RGB | rgb(144, 185, 228) |
| HSL | hsl(211, 61%, 73%) |
| OKLCH | oklch(77.2% 0.076 250) |
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 #90B9E4 | 2.04:1 | Fails | Lc -44.4 | Non-text elements, placeholder text |
| Black text on #90B9E4 | 10.24:1 | AAA | Lc 64.0 | Content text, not long reading |
| #90B9E4 text on white | 2.04:1 | Fails | Lc 39.9 | Non-text elements, placeholder text |
| #90B9E4 text on black | 10.24:1 | AAA | Lc -62.4 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF8
oklch(93.5% 0.022 250.2)
-
Step 200
200
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300 (this color)
#90B9E4
oklch(77.2% 0.076 250)
-
Step 400
400
#62A5E9
oklch(70.6% 0.122 250.2)
-
Step 500
500
#2E8DE3
oklch(63.1% 0.156 250.2)
-
Step 600
600
#0076CB
oklch(55.7% 0.158 250)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518E
oklch(42.8% 0.121 249.9)
-
Step 900
900
#074375
oklch(37.7% 0.102 250.3)
-
Step 950
950
#092844
oklch(27.1% 0.063 249.6)
#90B9E4 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) | #A9BAE6 | 0.031 |
| Deuteranopia (no green cones) | #9EB1E3 | 0.025 |
| Tritanopia (no blue cones) | #74C3C7 | 0.065 |
| Achromatopsia (no color) | #B5B5B5 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B9E4
#90B9E4
oklch(77.2% 0.076 250)
- #D4AD7F
#D4AD7F
oklch(77.2% 0.076 70.9)
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 #90B9E4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.031
- Light Cornflower Blue #98C1D9 ΔE 0.033
- Carolina Blue #8AB8FE ΔE 0.039
- Lightblue #7BC8F6 ΔE 0.043
- Pastel Blue #A2BFFE ΔE 0.045
- Cloudy Blue #ACC2D9 ΔE 0.049
- Sky #82CAFC ΔE 0.049
- Light Steel Blue #B0C4DE ΔE 0.054
Use #90B9E4 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.