#90B3BF
Closest named color: Cool Steel (#97A7B3). oklch(74.5% 0.042 220.7), rgb(144, 179, 191).
Aa
Black text reads best on this color (9.38:1).
About this color
#90B3BF is a medium-light, muted teal or cyan. In OKLCH its lightness is 74%, its chroma 0.042 and its hue 221°. 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 9.38:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.38:1 |
| White text | 2.23:1 |
Values
| HEX | #90B3BF |
| RGB | rgb(144, 179, 191) |
| HSL | hsl(195, 27%, 66%) |
| OKLCH | oklch(74.5% 0.042 220.7) |
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 #90B3BF | 2.23:1 | Fails | Lc -48.9 | Large or bold text, headings |
| Black text on #90B3BF | 9.38:1 | AAA | Lc 59.9 | Large or bold text, headings |
| #90B3BF text on white | 2.23:1 | Fails | Lc 44.1 | Non-text elements, placeholder text |
| #90B3BF text on black | 9.38:1 | AAA | Lc -58.1 | 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
#CFDCE0
oklch(88.6% 0.015 218.1)
-
Step 300
300
#AFC5CC
oklch(80.9% 0.026 218.9)
-
Step 400
400 (this color)
#90B3BF
oklch(74.5% 0.042 220.7)
-
Step 500
500
#6591A0
oklch(63% 0.053 221.2)
-
Step 600
600
#4B7B8B
oklch(55.5% 0.058 221.2)
-
Step 700
700
#3C6876
oklch(49.1% 0.054 220.4)
-
Step 800
800
#325560
oklch(42.8% 0.044 220)
-
Step 900
900
#2C464F
oklch(37.7% 0.035 221.7)
-
Step 950
950
#1A292E
oklch(27% 0.022 220.6)
#90B3BF 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) | #ACB1C0 | 0.036 |
| Deuteranopia (no green cones) | #A4ABBF | 0.032 |
| Tritanopia (no blue cones) | #82B7B7 | 0.025 |
| Achromatopsia (no color) | #ADADAD | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B3BF
#90B3BF
oklch(74.5% 0.042 220.7)
- #C5A499
#C5A499
oklch(74.5% 0.042 39.3)
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 #90B3BF, 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 0.038
- Light Grey Blue #9DBCD4 ΔE 0.039
- Dark Gray #A9A9A9 ΔE 0.043
- Pewter #96A8A1 ΔE 0.044
- Cool Grey #95A3A6 ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.047
- Light Cornflower Blue #98C1D9 ΔE 0.048
Use #90B3BF 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.