#90AEB8
Closest named color: Cool Steel (#97A7B3). oklch(73.2% 0.036 220), rgb(144, 174, 184).
Aa
Black text reads best on this color (8.93:1).
About this color
#90AEB8 is a medium-light, muted teal or cyan. In OKLCH its lightness is 73%, its chroma 0.036 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.019 away. Black text reads best on it, at 8.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.93:1 |
| White text | 2.35:1 |
Values
| HEX | #90AEB8 |
| RGB | rgb(144, 174, 184) |
| HSL | hsl(195, 22%, 64%) |
| OKLCH | oklch(73.2% 0.036 220) |
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 #90AEB8 | 2.35:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #90AEB8 | 8.93:1 | AAA | Lc 57.6 | Large or bold text, headings |
| #90AEB8 text on white | 2.35:1 | Fails | Lc 46.3 | Large or bold text, headings |
| #90AEB8 text on black | 8.93:1 | AAA | Lc -55.7 | 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
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D1DBDF
oklch(88.5% 0.012 223.5)
-
Step 300
300
#B2C4CB
oklch(80.9% 0.022 223.1)
-
Step 400
400 (this color)
#90AEB8
oklch(73.2% 0.036 220)
-
Step 500
500
#6A909D
oklch(63% 0.046 221)
-
Step 600
600
#517B88
oklch(55.7% 0.051 219.3)
-
Step 700
700
#426773
oklch(49.1% 0.046 220.4)
-
Step 800
800
#37545E
oklch(42.7% 0.038 221.6)
-
Step 900
900
#30464D
oklch(37.9% 0.03 219.6)
-
Step 950
950
#1C292D
oklch(27.1% 0.019 218.7)
#90AEB8 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) | #A8ACB9 | 0.032 |
| Deuteranopia (no green cones) | #A1A7B8 | 0.028 |
| Tritanopia (no blue cones) | #84B2B1 | 0.023 |
| Achromatopsia (no color) | #A9A9A9 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90AEB8
#90AEB8
oklch(73.2% 0.036 220)
- #BDA197
#BDA197
oklch(73.1% 0.036 40.6)
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 #90AEB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.019
- Pewter #96A8A1 ΔE 0.032
- Cool Grey #95A3A6 ΔE 0.033
- Bluegrey #85A3B2 ΔE 0.035
- Dark Gray #A9A9A9 ΔE 0.036
- Bluey Grey #89A0B0 ΔE 0.040
- French Gray #ADB5BD ΔE 0.045
- Greyblue #77A1B5 ΔE 0.050
Use #90AEB8 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.