#90AEB4
Closest named color: Cool Steel (#97A7B3). oklch(73% 0.034 211.1), rgb(144, 174, 180).
Aa
Black text reads best on this color (8.89:1).
About this color
#90AEB4 is a medium-light, muted teal or cyan. In OKLCH its lightness is 73%, its chroma 0.034 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.020 away. Black text reads best on it, at 8.89:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.89:1 |
| White text | 2.35:1 |
Values
| HEX | #90AEB4 |
| RGB | rgb(144, 174, 180) |
| HSL | hsl(190, 19%, 64%) |
| OKLCH | oklch(73% 0.034 211.1) |
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 #90AEB4 | 2.35:1 | Fails | Lc -51.5 | Large or bold text, headings |
| Black text on #90AEB4 | 8.89:1 | AAA | Lc 57.5 | Large or bold text, headings |
| #90AEB4 text on white | 2.35:1 | Fails | Lc 46.5 | Large or bold text, headings |
| #90AEB4 text on black | 8.89:1 | AAA | Lc -55.5 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D1DBDD
oklch(88.4% 0.011 211)
-
Step 300
300
#B2C5C8
oklch(81% 0.021 208.1)
-
Step 400
400 (this color)
#90AEB4
oklch(73% 0.034 211.1)
-
Step 500
500
#6B9198
oklch(63.1% 0.043 210.1)
-
Step 600
600
#527B83
oklch(55.6% 0.047 211.1)
-
Step 700
700
#42686F
oklch(49.2% 0.044 210.4)
-
Step 800
800
#37555A
oklch(42.8% 0.036 209)
-
Step 900
900
#30464A
oklch(37.8% 0.028 210)
-
Step 950
950
#1C292B
oklch(27% 0.018 207.9)
#90AEB4 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) | #A9ACB4 | 0.033 |
| Deuteranopia (no green cones) | #A2A7B4 | 0.029 |
| Tritanopia (no blue cones) | #85B1B0 | 0.018 |
| Achromatopsia (no color) | #A9A9A9 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90AEB4
#90AEB4
oklch(73% 0.034 211.1)
- #BCA09B
#BCA09B
oklch(72.9% 0.034 29.8)
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 #90AEB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.020
- Pewter #96A8A1 ΔE 0.027
- Cool Grey #95A3A6 ΔE 0.030
- Dark Gray #A9A9A9 ΔE 0.034
- Bluegrey #85A3B2 ΔE 0.035
- Bluey Grey #89A0B0 ΔE 0.040
- French Gray #ADB5BD ΔE 0.046
- Greyblue #77A1B5 ΔE 0.051
Use #90AEB4 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.