#90ABB9
Closest named color: Cool Steel (#97A7B3). oklch(72.5% 0.036 230.5), rgb(144, 171, 185).
Aa
Black text reads best on this color (8.71:1).
About this color
#90ABB9 is a medium-light, muted blue. In OKLCH its lightness is 73%, its chroma 0.036 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.013 away. Black text reads best on it, at 8.71:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.71:1 |
| White text | 2.41:1 |
Values
| HEX | #90ABB9 |
| RGB | rgb(144, 171, 185) |
| HSL | hsl(200, 23%, 65%) |
| OKLCH | oklch(72.5% 0.036 230.5) |
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 #90ABB9 | 2.41:1 | Fails | Lc -52.5 | Large or bold text, headings |
| Black text on #90ABB9 | 8.71:1 | AAA | Lc 56.5 | Large or bold text, headings |
| #90ABB9 text on white | 2.41:1 | Fails | Lc 47.5 | Large or bold text, headings |
| #90ABB9 text on black | 8.71:1 | AAA | Lc -54.5 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B3C4CD
oklch(81% 0.023 230.6)
-
Step 400
400 (this color)
#90ABB9
oklch(72.5% 0.036 230.5)
-
Step 500
500
#6D8FA0
oklch(63.1% 0.046 230)
-
Step 600
600
#54798B
oklch(55.5% 0.05 229.8)
-
Step 700
700
#456676
oklch(49.1% 0.046 229.8)
-
Step 800
800
#395360
oklch(42.7% 0.038 230.4)
-
Step 900
900
#31454F
oklch(37.8% 0.03 230.2)
-
Step 950
950
#1D282E
oklch(26.9% 0.019 232.2)
#90ABB9 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) | #A4AABA | 0.026 |
| Deuteranopia (no green cones) | #9EA5B9 | 0.023 |
| Tritanopia (no blue cones) | #84AFAF | 0.026 |
| Achromatopsia (no color) | #A7A7A7 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90ABB9
#90ABB9
oklch(72.5% 0.036 230.5)
- #BAA092
#BAA092
oklch(72.5% 0.037 50.1)
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 #90ABB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.013
- Bluegrey #85A3B2 ΔE 0.028
- Cool Grey #95A3A6 ΔE 0.029
- Bluey Grey #89A0B0 ΔE 0.032
- Pewter #96A8A1 ΔE 0.033
- Dark Gray #A9A9A9 ΔE 0.037
- Greyblue #77A1B5 ΔE 0.044
- Cool Gray #8D99AE ΔE 0.049
Use #90ABB9 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.