#90A5A8
Closest named color: Cool Grey (#95A3A6). oklch(70.7% 0.024 207.1), rgb(144, 165, 168).
Aa
Black text reads best on this color (8.13:1).
About this color
#90A5A8 is a medium-light close to neutral grey. In OKLCH its lightness is 71%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Cool Grey (#95A3A6), ΔE 0.008 away. Black text reads best on it, at 8.13:1.
| Hue family | Neutrals |
| Lightness | medium-light (71%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Cool Grey (#95A3A6) |
| Black text | 8.13:1 |
| White text | 2.58:1 |
Values
| HEX | #90A5A8 |
| RGB | rgb(144, 165, 168) |
| HSL | hsl(187, 12%, 61%) |
| OKLCH | oklch(70.7% 0.024 207.1) |
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 #90A5A8 | 2.58:1 | Fails | Lc -55.6 | Large or bold text, headings |
| Black text on #90A5A8 | 8.13:1 | AAA | Lc 53.5 | Large or bold text, headings |
| #90A5A8 text on white | 2.58:1 | Fails | Lc 50.5 | Large or bold text, headings |
| #90A5A8 text on black | 8.13:1 | AAA | Lc -51.4 | 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
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D3DBDC
oklch(88.6% 0.009 205.9)
-
Step 300
300
#B6C3C5
oklch(80.8% 0.015 207.9)
-
Step 400
400 (this color)
#90A5A8
oklch(70.7% 0.024 207.1)
-
Step 500
500
#758F93
oklch(63.1% 0.03 207.8)
-
Step 600
600
#5D797D
oklch(55.6% 0.033 207.1)
-
Step 700
700
#4C666A
oklch(49.1% 0.031 207.9)
-
Step 800
800
#3F5356
oklch(42.7% 0.025 207.6)
-
Step 900
900
#354547
oklch(37.7% 0.021 205.7)
-
Step 950
950
#1F282A
oklch(26.9% 0.013 212.7)
#90A5A8 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) | #A1A3A8 | 0.023 |
| Deuteranopia (no green cones) | #9DA0A8 | 0.021 |
| Tritanopia (no blue cones) | #89A7A6 | 0.011 |
| Achromatopsia (no color) | #A1A1A1 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A5A8
#90A5A8
oklch(70.7% 0.024 207.1)
- #AF9B98
#AF9B98
oklch(70.6% 0.024 27.9)
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 #90A5A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Grey #95A3A6 ΔE 0.008
- Pewter #96A8A1 ΔE 0.017
- Cool Steel #97A7B3 ΔE 0.019
- Bluegrey #85A3B2 ΔE 0.022
- Bluey Grey #89A0B0 ΔE 0.023
- Dark Gray #A9A9A9 ΔE 0.037
- Cool Gray #8D99AE ΔE 0.038
- Greyblue #77A1B5 ΔE 0.039
Use #90A5A8 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.