#90AFCB
Closest named color: Cool Steel (#97A7B3). oklch(74.1% 0.053 245.9), rgb(144, 175, 203).
Aa
Black text reads best on this color (9.18:1).
About this color
#90AFCB is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.053 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.035 away. Black text reads best on it, at 9.18:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.18:1 |
| White text | 2.28:1 |
Values
| HEX | #90AFCB |
| RGB | rgb(144, 175, 203) |
| HSL | hsl(208, 36%, 68%) |
| OKLCH | oklch(74.1% 0.053 245.9) |
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 #90AFCB | 2.28:1 | Fails | Lc -50.0 | Large or bold text, headings |
| Black text on #90AFCB | 9.18:1 | AAA | Lc 58.9 | Large or bold text, headings |
| #90AFCB text on white | 2.28:1 | Fails | Lc 45.1 | Large or bold text, headings |
| #90AFCB text on black | 9.18:1 | AAA | Lc -57.0 | 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
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE5
oklch(88.6% 0.018 245.4)
-
Step 300
300
#B0C3D5
oklch(80.8% 0.033 246.8)
-
Step 400
400 (this color)
#90AFCB
oklch(74.1% 0.053 245.9)
-
Step 500
500
#678EB0
oklch(63.1% 0.067 245.5)
-
Step 600
600
#4E789C
oklch(55.7% 0.073 245.5)
-
Step 700
700
#3F6585
oklch(49.2% 0.067 245.2)
-
Step 800
800
#34526C
oklch(42.7% 0.056 245.8)
-
Step 900
900
#2E4458
oklch(37.7% 0.044 246.7)
-
Step 950
950
#1B2833
oklch(27% 0.027 244.6)
#90AFCB 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) | #A4AFCC | 0.026 |
| Deuteranopia (no green cones) | #9DA9CA | 0.022 |
| Tritanopia (no blue cones) | #7FB6B8 | 0.044 |
| Achromatopsia (no color) | #ABABAB | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90AFCB
#90AFCB
oklch(74.1% 0.053 245.9)
- #C3A588
#C3A588
oklch(74.1% 0.053 65.9)
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 #90AFCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.035
- Light Grey Blue #9DBCD4 ΔE 0.040
- Bluegrey #85A3B2 ΔE 0.046
- French Gray #ADB5BD ΔE 0.048
- Light Cornflower Blue #98C1D9 ΔE 0.050
- Bluey Grey #89A0B0 ΔE 0.051
- Dark Gray #A9A9A9 ΔE 0.053
- Cool Grey #95A3A6 ΔE 0.054
Use #90AFCB 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.