#90A4AB
Closest named color: Cool Grey (#95A3A6). oklch(70.5% 0.025 220.9), rgb(144, 164, 171).
Aa
Black text reads best on this color (8.08:1).
About this color
#90A4AB is a medium-light close to neutral grey. In OKLCH its lightness is 71%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Cool Grey (#95A3A6), ΔE 0.009 away. Black text reads best on it, at 8.08:1.
| Hue family | Neutrals |
| Lightness | medium-light (71%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Cool Grey (#95A3A6) |
| Black text | 8.08:1 |
| White text | 2.59:1 |
Values
| HEX | #90A4AB |
| RGB | rgb(144, 164, 171) |
| HSL | hsl(196, 14%, 62%) |
| OKLCH | oklch(70.5% 0.025 220.9) |
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 #90A4AB | 2.59:1 | Fails | Lc -55.9 | Large or bold text, headings |
| Black text on #90A4AB | 8.08:1 | AAA | Lc 53.3 | Large or bold text, headings |
| #90A4AB text on white | 2.59:1 | Fails | Lc 50.7 | Large or bold text, headings |
| #90A4AB text on black | 8.08:1 | AAA | Lc -51.2 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D3DADD
oklch(88.4% 0.009 225.1)
-
Step 300
300
#B6C3C8
oklch(80.9% 0.016 222.7)
-
Step 400
400 (this color)
#90A4AB
oklch(70.5% 0.025 220.9)
-
Step 500
500
#758E97
oklch(63% 0.032 221.7)
-
Step 600
600
#5D7882
oklch(55.5% 0.035 222.5)
-
Step 700
700
#4D656E
oklch(49.1% 0.032 222.9)
-
Step 800
800
#3F5359
oklch(42.8% 0.027 218.1)
-
Step 900
900
#364449
oklch(37.6% 0.02 221.6)
-
Step 950
950
#20282B
oklch(27% 0.013 222.5)
#90A4AB 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) | #A0A3AB | 0.022 |
| Deuteranopia (no green cones) | #9B9FAB | 0.019 |
| Tritanopia (no blue cones) | #89A6A6 | 0.014 |
| Achromatopsia (no color) | #A1A1A1 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A4AB
#90A4AB
oklch(70.5% 0.025 220.9)
- #AE9B95
#AE9B95
oklch(70.4% 0.024 38.3)
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 #90A4AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Grey #95A3A6 ΔE 0.009
- Cool Steel #97A7B3 ΔE 0.017
- Bluegrey #85A3B2 ΔE 0.018
- Bluey Grey #89A0B0 ΔE 0.018
- Pewter #96A8A1 ΔE 0.023
- Cool Gray #8D99AE ΔE 0.033
- Greyblue #77A1B5 ΔE 0.036
- Dark Gray #A9A9A9 ΔE 0.038
Use #90A4AB 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.