#90A9DB
Closest named color: Carolina Blue (#8AB8FE). oklch(73.4% 0.078 263.9), rgb(144, 169, 219).
Aa
Black text reads best on this color (8.88:1).
About this color
#90A9DB is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.078 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.056 away. Black text reads best on it, at 8.88:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 8.88:1 |
| White text | 2.36:1 |
Values
| HEX | #90A9DB |
| RGB | rgb(144, 169, 219) |
| HSL | hsl(220, 51%, 71%) |
| OKLCH | oklch(73.4% 0.078 263.9) |
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 #90A9DB | 2.36:1 | Fails | Lc -51.5 | Large or bold text, headings |
| Black text on #90A9DB | 8.88:1 | AAA | Lc 57.4 | Large or bold text, headings |
| #90A9DB text on white | 2.36:1 | Fails | Lc 46.6 | Large or bold text, headings |
| #90A9DB text on black | 8.88:1 | AAA | Lc -55.5 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9EC
oklch(88.4% 0.028 265.4)
-
Step 300
300
#B1C1E1
oklch(80.9% 0.049 264.3)
-
Step 400
400 (this color)
#90A9DB
oklch(73.4% 0.078 263.9)
-
Step 500
500
#6A88C6
oklch(63% 0.1 264)
-
Step 600
600
#5271B3
oklch(55.5% 0.109 264.1)
-
Step 700
700
#435F9A
oklch(49.2% 0.101 263.9)
-
Step 800
800
#374E7D
oklch(42.8% 0.083 263.5)
-
Step 900
900
#304164
oklch(37.8% 0.064 263.8)
-
Step 950
950
#1C263B
oklch(27% 0.042 264.3)
#90A9DB 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) | #98ACDD | 0.014 |
| Deuteranopia (no green cones) | #91A5DA | 0.010 |
| Tritanopia (no blue cones) | #7AB3BA | 0.069 |
| Achromatopsia (no color) | #A9A9A9 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A9DB
#90A9DB
oklch(73.4% 0.078 263.9)
- #C0A56F
#C0A56F
oklch(73.3% 0.078 84.1)
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 #90A9DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.056
- Cool Steel #97A7B3 ΔE 0.058
- Light Grey Blue #9DBCD4 ΔE 0.060
- Bluegrey #85A3B2 ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.064
- Greyblue #77A1B5 ΔE 0.067
- Light Cornflower Blue #98C1D9 ΔE 0.069
- Cool Gray #8D99AE ΔE 0.070
Use #90A9DB 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.