#90B1DF
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.3% 0.076 256.7), rgb(144, 177, 223).
Aa
Black text reads best on this color (9.54:1).
About this color
#90B1DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.076 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.042 away. Black text reads best on it, at 9.54:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.54:1 |
| White text | 2.20:1 |
Values
| HEX | #90B1DF |
| RGB | rgb(144, 177, 223) |
| HSL | hsl(215, 55%, 72%) |
| OKLCH | oklch(75.3% 0.076 256.7) |
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 #90B1DF | 2.20:1 | Fails | Lc -48.0 | Large or bold text, headings |
| Black text on #90B1DF | 9.54:1 | AAA | Lc 60.7 | Content text, not long reading |
| #90B1DF text on white | 2.20:1 | Fails | Lc 43.3 | Non-text elements, placeholder text |
| #90B1DF text on black | 9.54:1 | AAA | Lc -58.9 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ADC2E0
oklch(80.8% 0.048 257.3)
-
Step 400
400 (this color)
#90B1DF
oklch(75.3% 0.076 256.7)
-
Step 500
500
#628BC4
oklch(63.1% 0.098 256.8)
-
Step 600
600
#4974B0
oklch(55.5% 0.106 256.9)
-
Step 700
700
#3A6197
oklch(49% 0.098 256.8)
-
Step 800
800
#30507B
oklch(42.8% 0.081 256.2)
-
Step 900
900
#2B4263
oklch(37.6% 0.064 257.4)
-
Step 950
950
#19273A
oklch(27% 0.041 256.3)
#90B1DF 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) | #A1B3E1 | 0.023 |
| Deuteranopia (no green cones) | #98ABDE | 0.018 |
| Tritanopia (no blue cones) | #77BBC0 | 0.067 |
| Achromatopsia (no color) | #AFAFAF | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90B1DF
#90B1DF
oklch(75.3% 0.076 256.7)
- #CAA978
#CAA978
oklch(75.3% 0.076 77.1)
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 #90B1DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.042
- Carolina Blue #8AB8FE ΔE 0.044
- Light Cornflower Blue #98C1D9 ΔE 0.049
- Pastel Blue #A2BFFE ΔE 0.058
- Cool Steel #97A7B3 ΔE 0.062
- Lightblue #7BC8F6 ΔE 0.062
- Cloudy Blue #ACC2D9 ΔE 0.063
- French Gray #ADB5BD ΔE 0.064
Use #90B1DF 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.