#90B9BF
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.8% 0.045 207.3), rgb(144, 185, 191).
Aa
Black text reads best on this color (9.87:1).
About this color
#90B9BF is a medium-light, muted teal or cyan. In OKLCH its lightness is 76%, its chroma 0.045 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.035 away. Black text reads best on it, at 9.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.87:1 |
| White text | 2.12:1 |
Values
| HEX | #90B9BF |
| RGB | rgb(144, 185, 191) |
| HSL | hsl(188, 27%, 66%) |
| OKLCH | oklch(75.8% 0.045 207.3) |
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 #90B9BF | 2.12:1 | Fails | Lc -46.3 | Large or bold text, headings |
| Black text on #90B9BF | 9.87:1 | AAA | Lc 62.3 | Content text, not long reading |
| #90B9BF text on white | 2.12:1 | Fails | Lc 41.7 | Non-text elements, placeholder text |
| #90B9BF text on black | 9.87:1 | AAA | Lc -60.6 | Content text, not long reading |
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 300.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C7DEE1
oklch(88.4% 0.025 206.2)
-
Step 300
300 (this color)
#90B9BF
oklch(75.8% 0.045 207.3)
-
Step 400
400
#68ADB7
oklch(70.6% 0.071 207.5)
-
Step 500
500
#3699A6
oklch(63.2% 0.091 207.5)
-
Step 600
600
#008290
oklch(55.5% 0.095 208)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#0D4A52
oklch(37.6% 0.06 208.3)
-
Step 950
950
#0B2C30
oklch(27.1% 0.038 206.4)
#90B9BF 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) | #B2B6BF | 0.043 |
| Deuteranopia (no green cones) | #AAAFBF | 0.041 |
| Tritanopia (no blue cones) | #81BDBB | 0.022 |
| Achromatopsia (no color) | #B2B2B2 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B9BF
#90B9BF
oklch(75.8% 0.045 207.3)
- #CCA6A1
#CCA6A1
oklch(75.8% 0.046 26.9)
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 #90B9BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.035
- French Gray #ADB5BD ΔE 0.037
- Light Cornflower Blue #98C1D9 ΔE 0.040
- Cool Steel #97A7B3 ΔE 0.047
- Dark Gray #A9A9A9 ΔE 0.050
- Pewter #96A8A1 ΔE 0.052
- Cloudy Blue #ACC2D9 ΔE 0.056
- Muted Teal #90B494 ΔE 0.059
Use #90B9BF 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.