#90B4FF
Closest named color: Carolina Blue (#8AB8FE). oklch(77.3% 0.115 264.2), rgb(144, 180, 255).
Aa
Black text reads best on this color (10.15:1).
About this color
#90B4FF is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.115 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.012 away. Black text reads best on it, at 10.15:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 10.15:1 |
| White text | 2.06:1 |
Values
| HEX | #90B4FF |
| RGB | rgb(144, 180, 255) |
| HSL | hsl(221, 100%, 78%) |
| OKLCH | oklch(77.3% 0.115 264.2) |
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 #90B4FF | 2.06:1 | Fails | Lc -44.8 | Non-text elements, placeholder text |
| Black text on #90B4FF | 10.15:1 | AAA | Lc 63.7 | Content text, not long reading |
| #90B4FF text on white | 2.06:1 | Fails | Lc 40.3 | Non-text elements, placeholder text |
| #90B4FF text on black | 10.15:1 | AAA | Lc -62.0 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7DAFF
oklch(88.6% 0.055 263.7)
-
Step 300
300 (this color)
#90B4FF
oklch(77.3% 0.115 264.2)
-
Step 400
400
#709DFF
oklch(70.7% 0.152 264.2)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#255FFF
oklch(55.6% 0.244 264.3)
-
Step 700
700
#154AE4
oklch(49.1% 0.238 264.2)
-
Step 800
800
#133EB8
oklch(42.6% 0.197 264.3)
-
Step 900
900
#153791
oklch(37.6% 0.154 264.3)
-
Step 950
950
#0D2255
oklch(27.1% 0.097 264.1)
#90B4FF 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) | #99BAFF | 0.020 |
| Deuteranopia (no green cones) | #8DB0FD | 0.011 |
| Tritanopia (no blue cones) | #67C4CF | 0.103 |
| Achromatopsia (no color) | #B4B4B4 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B4FF
#90B4FF
oklch(77.3% 0.115 264.2)
- #D8AF58
#D8AF58
oklch(77.4% 0.116 84.2)
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 #90B4FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.012
- Pastel Blue #A2BFFE ΔE 0.039
- Sky #82CAFC ΔE 0.060
- Lightblue #7BC8F6 ΔE 0.061
- Periwinkle Blue #8F99FB ΔE 0.070
- Light Sky Blue #87CEFA ΔE 0.072
- Light Grey Blue #9DBCD4 ΔE 0.073
- Light Cornflower Blue #98C1D9 ΔE 0.075
Use #90B4FF 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.