#90AFC8
Closest named color: Cool Steel (#97A7B3). oklch(73.9% 0.05 242.7), rgb(144, 175, 200).
Aa
Black text reads best on this color (9.15:1).
About this color
#90AFC8 is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.050 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.032 away. Black text reads best on it, at 9.15:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.15:1 |
| White text | 2.29:1 |
Values
| HEX | #90AFC8 |
| RGB | rgb(144, 175, 200) |
| HSL | hsl(207, 34%, 67%) |
| OKLCH | oklch(73.9% 0.05 242.7) |
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 #90AFC8 | 2.29:1 | Fails | Lc -50.1 | Large or bold text, headings |
| Black text on #90AFC8 | 9.15:1 | AAA | Lc 58.7 | Large or bold text, headings |
| #90AFC8 text on white | 2.29:1 | Fails | Lc 45.2 | Large or bold text, headings |
| #90AFC8 text on black | 9.15:1 | AAA | Lc -56.9 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B0C3D3
oklch(80.8% 0.031 243.5)
-
Step 400
400 (this color)
#90AFC8
oklch(73.9% 0.05 242.7)
-
Step 500
500
#678EAD
oklch(63% 0.064 242.9)
-
Step 600
600
#4E7899
oklch(55.5% 0.07 243.2)
-
Step 700
700
#3F6582
oklch(49.1% 0.064 242.5)
-
Step 800
800
#34536A
oklch(42.8% 0.053 241.7)
-
Step 900
900
#2E4456
oklch(37.6% 0.041 243.9)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#90AFC8 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) | #A5AFC9 | 0.027 |
| Deuteranopia (no green cones) | #9EA8C8 | 0.025 |
| Tritanopia (no blue cones) | #7FB5B7 | 0.040 |
| Achromatopsia (no color) | #ABABAB | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90AFC8
#90AFC8
oklch(73.9% 0.05 242.7)
- #C2A48B
#C2A48B
oklch(73.9% 0.05 61.7)
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 #90AFC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.032
- Light Grey Blue #9DBCD4 ΔE 0.041
- Bluegrey #85A3B2 ΔE 0.044
- French Gray #ADB5BD ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.048
- Dark Gray #A9A9A9 ΔE 0.050
- Cool Grey #95A3A6 ΔE 0.050
- Light Cornflower Blue #98C1D9 ΔE 0.051
Use #90AFC8 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.