#90B1D4
Closest named color: Light Grey Blue (#9DBCD4). oklch(74.8% 0.062 250.2), rgb(144, 177, 212).
Aa
Black text reads best on this color (9.42:1).
About this color
#90B1D4 is a medium-light, muted blue. In OKLCH its lightness is 75%, its chroma 0.062 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.036 away. Black text reads best on it, at 9.42:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.42:1 |
| White text | 2.22:1 |
Values
| HEX | #90B1D4 |
| RGB | rgb(144, 177, 212) |
| HSL | hsl(211, 44%, 70%) |
| OKLCH | oklch(74.8% 0.062 250.2) |
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 #90B1D4 | 2.22:1 | Fails | Lc -48.7 | Large or bold text, headings |
| Black text on #90B1D4 | 9.42:1 | AAA | Lc 60.1 | Content text, not long reading |
| #90B1D4 text on white | 2.22:1 | Fails | Lc 43.9 | Non-text elements, placeholder text |
| #90B1D4 text on black | 9.42:1 | AAA | Lc -58.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3D9
oklch(80.8% 0.039 249.5)
-
Step 400
400 (this color)
#90B1D4
oklch(74.8% 0.062 250.2)
-
Step 500
500
#648DB8
oklch(63% 0.079 250.3)
-
Step 600
600
#4A77A4
oklch(55.6% 0.086 249.6)
-
Step 700
700
#3B648D
oklch(49.2% 0.081 249.8)
-
Step 800
800
#315172
oklch(42.6% 0.067 250.4)
-
Step 900
900
#2C445C
oklch(37.8% 0.051 249.3)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#90B1D4 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) | #A4B2D6 | 0.026 |
| Deuteranopia (no green cones) | #9CABD3 | 0.021 |
| Tritanopia (no blue cones) | #7BB9BC | 0.054 |
| Achromatopsia (no color) | #AEAEAE | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B1D4
#90B1D4
oklch(74.8% 0.062 250.2)
- #C7A783
#C7A783
oklch(74.8% 0.062 70)
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 #90B1D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.036
- Light Cornflower Blue #98C1D9 ΔE 0.045
- Cool Steel #97A7B3 ΔE 0.047
- French Gray #ADB5BD ΔE 0.052
- Bluegrey #85A3B2 ΔE 0.058
- Carolina Blue #8AB8FE ΔE 0.059
- Cloudy Blue #ACC2D9 ΔE 0.061
- Bluey Grey #89A0B0 ΔE 0.062
Use #90B1D4 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.