#90B9CC
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.3% 0.052 228), rgb(144, 185, 204).
Aa
Black text reads best on this color (9.99:1).
About this color
#90B9CC is a medium-light, muted teal or cyan. In OKLCH its lightness is 76%, its chroma 0.052 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.022 away. Black text reads best on it, at 9.99:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.99:1 |
| White text | 2.10:1 |
Values
| HEX | #90B9CC |
| RGB | rgb(144, 185, 204) |
| HSL | hsl(199, 37%, 68%) |
| OKLCH | oklch(76.3% 0.052 228) |
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 #90B9CC | 2.10:1 | Fails | Lc -45.7 | Large or bold text, headings |
| Black text on #90B9CC | 9.99:1 | AAA | Lc 62.9 | Content text, not long reading |
| #90B9CC text on white | 2.10:1 | Fails | Lc 41.1 | Non-text elements, placeholder text |
| #90B9CC text on black | 9.99:1 | AAA | Lc -61.2 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C6DDE8
oklch(88.4% 0.029 228.1)
-
Step 300
300 (this color)
#90B9CC
oklch(76.3% 0.052 228)
-
Step 400
400
#66ABC9
oklch(70.7% 0.082 227.8)
-
Step 500
500
#3295BB
oklch(63% 0.106 228)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#0A485E
oklch(37.6% 0.069 228.1)
-
Step 950
950
#0A2A37
oklch(26.9% 0.044 228.8)
#90B9CC 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) | #AFB7CD | 0.039 |
| Deuteranopia (no green cones) | #A6B0CC | 0.035 |
| Tritanopia (no blue cones) | #7DBFBF | 0.036 |
| Achromatopsia (no color) | #B3B3B3 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B9CC
#90B9CC
oklch(76.3% 0.052 228)
- #CEA996
#CEA996
oklch(76.3% 0.051 48.7)
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 #90B9CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.022
- Light Cornflower Blue #98C1D9 ΔE 0.028
- French Gray #ADB5BD ΔE 0.039
- Cloudy Blue #ACC2D9 ΔE 0.047
- Cool Steel #97A7B3 ΔE 0.051
- Light Steel Blue #B0C4DE ΔE 0.056
- Dark Gray #A9A9A9 ΔE 0.059
- Sky Blue #87CEEB ΔE 0.060
Use #90B9CC 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.