#90B3BB
Closest named color: Cool Steel (#97A7B3). oklch(74.4% 0.04 213.2), rgb(144, 179, 187).
Aa
Black text reads best on this color (9.35:1).
About this color
#90B3BB is a medium-light, muted teal or cyan. In OKLCH its lightness is 74%, its chroma 0.040 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.032 away. Black text reads best on it, at 9.35:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.35:1 |
| White text | 2.24:1 |
Values
| HEX | #90B3BB |
| RGB | rgb(144, 179, 187) |
| HSL | hsl(191, 24%, 65%) |
| OKLCH | oklch(74.4% 0.04 213.2) |
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 #90B3BB | 2.24:1 | Fails | Lc -49.1 | Large or bold text, headings |
| Black text on #90B3BB | 9.35:1 | AAA | Lc 59.7 | Large or bold text, headings |
| #90B3BB text on white | 2.24:1 | Fails | Lc 44.2 | Non-text elements, placeholder text |
| #90B3BB text on black | 9.35:1 | AAA | Lc -57.9 | 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
#CFDCDE
oklch(88.5% 0.014 207.9)
-
Step 300
300
#AFC5CA
oklch(80.8% 0.025 212.9)
-
Step 400
400 (this color)
#90B3BB
oklch(74.4% 0.04 213.2)
-
Step 500
500
#65929C
oklch(63.1% 0.051 213)
-
Step 600
600
#4B7C87
oklch(55.6% 0.056 213.6)
-
Step 700
700
#3C6972
oklch(49.2% 0.052 211.9)
-
Step 800
800
#32555D
oklch(42.6% 0.043 213.9)
-
Step 900
900
#2C464C
oklch(37.6% 0.033 213.8)
-
Step 950
950
#1A292D
oklch(26.9% 0.022 216.2)
#90B3BB 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) | #ACB0BC | 0.037 |
| Deuteranopia (no green cones) | #A5ABBB | 0.033 |
| Tritanopia (no blue cones) | #83B7B5 | 0.022 |
| Achromatopsia (no color) | #ADADAD | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B3BB
#90B3BB
oklch(74.4% 0.04 213.2)
- #C4A39C
#C4A39C
oklch(74.3% 0.04 32)
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 #90B3BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.032
- French Gray #ADB5BD ΔE 0.039
- Pewter #96A8A1 ΔE 0.040
- Dark Gray #A9A9A9 ΔE 0.041
- Light Grey Blue #9DBCD4 ΔE 0.043
- Cool Grey #95A3A6 ΔE 0.045
- Bluegrey #85A3B2 ΔE 0.047
- Light Cornflower Blue #98C1D9 ΔE 0.051
Use #90B3BB 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.