#90B3BA
Closest named color: Cool Steel (#97A7B3). oklch(74.3% 0.039 211.2), rgb(144, 179, 186).
Aa
Black text reads best on this color (9.34:1).
About this color
#90B3BA is a medium-light, muted teal or cyan. In OKLCH its lightness is 74%, its chroma 0.039 and its hue 211°. 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 9.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.34:1 |
| White text | 2.24:1 |
Values
| HEX | #90B3BA |
| RGB | rgb(144, 179, 186) |
| HSL | hsl(190, 23%, 65%) |
| OKLCH | oklch(74.3% 0.039 211.2) |
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 #90B3BA | 2.24:1 | Fails | Lc -49.1 | Large or bold text, headings |
| Black text on #90B3BA | 9.34:1 | AAA | Lc 59.7 | Large or bold text, headings |
| #90B3BA text on white | 2.24:1 | Fails | Lc 44.3 | Non-text elements, placeholder text |
| #90B3BA text on black | 9.34:1 | AAA | Lc -57.8 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
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)
#90B3BA
oklch(74.3% 0.039 211.2)
-
Step 500
500
#65929B
oklch(63.1% 0.051 211.4)
-
Step 600
600
#4C7C86
oklch(55.6% 0.054 212.3)
-
Step 700
700
#3C6971
oklch(49.2% 0.051 210.1)
-
Step 800
800
#32555C
oklch(42.6% 0.042 211.7)
-
Step 900
900
#2D464B
oklch(37.6% 0.032 211.5)
-
Step 950
950
#1A292C
oklch(26.9% 0.021 211.4)
#90B3BA 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) | #ADB0BA | 0.038 |
| Deuteranopia (no green cones) | #A5AABA | 0.035 |
| Tritanopia (no blue cones) | #83B6B5 | 0.020 |
| Achromatopsia (no color) | #ADADAD | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B3BA
#90B3BA
oklch(74.3% 0.039 211.2)
- #C3A39D
#C3A39D
oklch(74.2% 0.039 30.4)
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 #90B3BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.032
- Pewter #96A8A1 ΔE 0.039
- French Gray #ADB5BD ΔE 0.039
- Dark Gray #A9A9A9 ΔE 0.040
- Cool Grey #95A3A6 ΔE 0.044
- Light Grey Blue #9DBCD4 ΔE 0.044
- Bluegrey #85A3B2 ΔE 0.047
- Light Cornflower Blue #98C1D9 ΔE 0.052
Use #90B3BA 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.