#90B4DB
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.7% 0.069 250.8), rgb(144, 180, 219).
Aa
Black text reads best on this color (9.73:1).
About this color
#90B4DB is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.069 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.032 away. Black text reads best on it, at 9.73:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.73:1 |
| White text | 2.15:1 |
Values
| HEX | #90B4DB |
| RGB | rgb(144, 180, 219) |
| HSL | hsl(211, 51%, 71%) |
| OKLCH | oklch(75.7% 0.069 250.8) |
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 #90B4DB | 2.15:1 | Fails | Lc -47.0 | Large or bold text, headings |
| Black text on #90B4DB | 9.73:1 | AAA | Lc 61.6 | Content text, not long reading |
| #90B4DB text on white | 2.15:1 | Fails | Lc 42.3 | Non-text elements, placeholder text |
| #90B4DB text on black | 9.73:1 | AAA | Lc -59.9 | 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
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ADC3DC
oklch(80.9% 0.043 251.7)
-
Step 400
400 (this color)
#90B4DB
oklch(75.7% 0.069 250.8)
-
Step 500
500
#608DBD
oklch(63.1% 0.088 250.9)
-
Step 600
600
#4677A9
oklch(55.7% 0.095 250.3)
-
Step 700
700
#376491
oklch(49.2% 0.088 250)
-
Step 800
800
#2E5176
oklch(42.6% 0.074 251.2)
-
Step 900
900
#29445F
oklch(37.8% 0.057 249.6)
-
Step 950
950
#192838
oklch(27.1% 0.036 250.8)
#90B4DB 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) | #A5B5DD | 0.027 |
| Deuteranopia (no green cones) | #9CADDA | 0.022 |
| Tritanopia (no blue cones) | #78BDC1 | 0.059 |
| Achromatopsia (no color) | #B0B0B0 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B4DB
#90B4DB
oklch(75.7% 0.069 250.8)
- #CCA980
#CCA980
oklch(75.6% 0.069 70.9)
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 #90B4DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.032
- Light Cornflower Blue #98C1D9 ΔE 0.039
- Carolina Blue #8AB8FE ΔE 0.049
- Cloudy Blue #ACC2D9 ΔE 0.055
- French Gray #ADB5BD ΔE 0.055
- Lightblue #7BC8F6 ΔE 0.057
- Cool Steel #97A7B3 ΔE 0.058
- Pastel Blue #A2BFFE ΔE 0.059
Use #90B4DB 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.