#90A3BB
Closest named color: Bluey Grey (#89A0B0). oklch(70.9% 0.041 254.4), rgb(144, 163, 187).
Aa
Black text reads best on this color (8.14:1).
About this color
#90A3BB is a medium-light, muted blue. In OKLCH its lightness is 71%, its chroma 0.041 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Grey (#89A0B0), ΔE 0.020 away. Black text reads best on it, at 8.14:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Bluey Grey (#89A0B0) |
| Black text | 8.14:1 |
| White text | 2.57:1 |
Values
| HEX | #90A3BB |
| RGB | rgb(144, 163, 187) |
| HSL | hsl(213, 24%, 65%) |
| OKLCH | oklch(70.9% 0.041 254.4) |
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 #90A3BB | 2.57:1 | Fails | Lc -55.6 | Large or bold text, headings |
| Black text on #90A3BB | 8.14:1 | AAA | Lc 53.6 | Large or bold text, headings |
| #90A3BB text on white | 2.57:1 | Fails | Lc 50.4 | Large or bold text, headings |
| #90A3BB text on black | 8.14:1 | AAA | Lc -51.5 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B6C2D1
oklch(80.9% 0.025 254)
-
Step 400
400 (this color)
#90A3BB
oklch(70.9% 0.041 254.4)
-
Step 500
500
#748CA9
oklch(63.2% 0.052 253.4)
-
Step 600
600
#5C7595
oklch(55.5% 0.058 254.8)
-
Step 700
700
#4C627F
oklch(49% 0.054 255.5)
-
Step 800
800
#3E5067
oklch(42.6% 0.045 254.8)
-
Step 900
900
#354354
oklch(37.8% 0.034 253.6)
-
Step 950
950
#1F2731
oklch(27% 0.022 254.2)
#90A3BB 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) | #9BA4BC | 0.015 |
| Deuteranopia (no green cones) | #969FBA | 0.013 |
| Tritanopia (no blue cones) | #85A8AB | 0.035 |
| Achromatopsia (no color) | #A1A1A1 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A3BB
#90A3BB
oklch(70.9% 0.041 254.4)
- #B19E85
#B19E85
oklch(70.9% 0.042 74.6)
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 #90A3BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Grey #89A0B0 ΔE 0.020
- Bluegrey #85A3B2 ΔE 0.021
- Cool Steel #97A7B3 ΔE 0.021
- Cool Gray #8D99AE ΔE 0.030
- Cool Grey #95A3A6 ΔE 0.031
- Greyblue #77A1B5 ΔE 0.034
- Pewter #96A8A1 ΔE 0.045
- Dark Gray #A9A9A9 ΔE 0.049
Use #90A3BB 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.