#90A0BF
Closest named color: Bluey Grey (#89A0B0). oklch(70.4% 0.049 263.6), rgb(144, 160, 191).
Aa
Black text reads best on this color (7.96:1).
About this color
#90A0BF is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.049 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Grey (#89A0B0), ΔE 0.025 away. Black text reads best on it, at 7.96:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Bluey Grey (#89A0B0) |
| Black text | 7.96:1 |
| White text | 2.63:1 |
Values
| HEX | #90A0BF |
| RGB | rgb(144, 160, 191) |
| HSL | hsl(220, 27%, 66%) |
| OKLCH | oklch(70.4% 0.049 263.6) |
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 #90A0BF | 2.63:1 | Fails | Lc -56.5 | Large or bold text, headings |
| Black text on #90A0BF | 7.96:1 | AAA | Lc 52.7 | Large or bold text, headings |
| #90A0BF text on white | 2.63:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #90A0BF text on black | 7.96:1 | AAA | Lc -50.5 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D3D9E5
oklch(88.4% 0.018 264.5)
-
Step 300
300
#B6C1D5
oklch(80.9% 0.031 262.5)
-
Step 400
400 (this color)
#90A0BF
oklch(70.4% 0.049 263.6)
-
Step 500
500
#768AB0
oklch(63.2% 0.062 263)
-
Step 600
600
#5F739C
oklch(55.6% 0.068 264.2)
-
Step 700
700
#4E6085
oklch(49% 0.064 264.2)
-
Step 800
800
#404F6C
oklch(42.7% 0.052 263.2)
-
Step 900
900
#364258
oklch(37.8% 0.041 262.3)
-
Step 950
950
#202633
oklch(26.9% 0.026 265.4)
#90A0BF 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) | #96A2C0 | 0.010 |
| Deuteranopia (no green cones) | #929DBE | 0.008 |
| Tritanopia (no blue cones) | #84A6AA | 0.044 |
| Achromatopsia (no color) | #9F9F9F | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A0BF
#90A0BF
oklch(70.4% 0.049 263.6)
- #AE9E7D
#AE9E7D
oklch(70.5% 0.049 85.1)
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 #90A0BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Grey #89A0B0 ΔE 0.025
- Cool Gray #8D99AE ΔE 0.028
- Bluegrey #85A3B2 ΔE 0.028
- Cool Steel #97A7B3 ΔE 0.032
- Greyblue #77A1B5 ΔE 0.036
- Cool Grey #95A3A6 ΔE 0.041
- Pewter #96A8A1 ΔE 0.056
- Dark Gray #A9A9A9 ΔE 0.058
Use #90A0BF 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.