#90AEE4
Closest named color: Carolina Blue (#8AB8FE). oklch(74.8% 0.085 261.9), rgb(144, 174, 228).
Aa
Black text reads best on this color (9.36:1).
About this color
#90AEE4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.085 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.040 away. Black text reads best on it, at 9.36:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.36:1 |
| White text | 2.24:1 |
Values
| HEX | #90AEE4 |
| RGB | rgb(144, 174, 228) |
| HSL | hsl(219, 61%, 73%) |
| OKLCH | oklch(74.8% 0.085 261.9) |
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 #90AEE4 | 2.24:1 | Fails | Lc -49.0 | Large or bold text, headings |
| Black text on #90AEE4 | 9.36:1 | AAA | Lc 59.8 | Large or bold text, headings |
| #90AEE4 text on white | 2.24:1 | Fails | Lc 44.2 | Non-text elements, placeholder text |
| #90AEE4 text on black | 9.36:1 | AAA | Lc -58.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFDAED
oklch(88.6% 0.029 261.5)
-
Step 300
300
#AEC1E4
oklch(80.8% 0.054 262.6)
-
Step 400
400 (this color)
#90AEE4
oklch(74.8% 0.085 261.9)
-
Step 500
500
#6589CB
oklch(63.1% 0.108 261.9)
-
Step 600
600
#4C72B8
oklch(55.7% 0.118 261.7)
-
Step 700
700
#3D5F9F
oklch(49.1% 0.11 262)
-
Step 800
800
#324E81
oklch(42.8% 0.092 261.5)
-
Step 900
900
#2C4167
oklch(37.7% 0.071 261.6)
-
Step 950
950
#1A263C
oklch(26.9% 0.045 261.9)
#90AEE4 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) | #9BB1E6 | 0.017 |
| Deuteranopia (no green cones) | #93AAE3 | 0.011 |
| Tritanopia (no blue cones) | #75B9C0 | 0.076 |
| Achromatopsia (no color) | #ADADAD | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90AEE4
#90AEE4
oklch(74.8% 0.085 261.9)
- #C9A96E
#C9A96E
oklch(75% 0.085 82.1)
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 #90AEE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.040
- Light Grey Blue #9DBCD4 ΔE 0.054
- Pastel Blue #A2BFFE ΔE 0.059
- Light Cornflower Blue #98C1D9 ΔE 0.061
- Lightblue #7BC8F6 ΔE 0.068
- Cool Steel #97A7B3 ΔE 0.069
- Periwinkle Blue #8F99FB ΔE 0.072
- Sky #82CAFC ΔE 0.073
Use #90AEE4 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.