#90ACCB
Closest named color: Cool Steel (#97A7B3). oklch(73.4% 0.055 251.2), rgb(144, 172, 203).
Aa
Black text reads best on this color (8.94:1).
About this color
#90ACCB is a medium-light, muted blue. In OKLCH its lightness is 73%, its chroma 0.055 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.034 away. Black text reads best on it, at 8.94:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.94:1 |
| White text | 2.34:1 |
Values
| HEX | #90ACCB |
| RGB | rgb(144, 172, 203) |
| HSL | hsl(212, 36%, 68%) |
| OKLCH | oklch(73.4% 0.055 251.2) |
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 #90ACCB | 2.34:1 | Fails | Lc -51.2 | Large or bold text, headings |
| Black text on #90ACCB | 8.94:1 | AAA | Lc 57.7 | Large or bold text, headings |
| #90ACCB text on white | 2.34:1 | Fails | Lc 46.3 | Large or bold text, headings |
| #90ACCB text on black | 8.94:1 | AAA | Lc -55.8 | 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
#E5EAF0
oklch(93.5% 0.01 252.8)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B1C3D7
oklch(81% 0.035 251)
-
Step 400
400 (this color)
#90ACCB
oklch(73.4% 0.055 251.2)
-
Step 500
500
#6A8DB3
oklch(63.2% 0.07 251)
-
Step 600
600
#51769F
oklch(55.5% 0.077 251.8)
-
Step 700
700
#426388
oklch(49.1% 0.071 252.1)
-
Step 800
800
#36516E
oklch(42.6% 0.059 251)
-
Step 900
900
#2F4359
oklch(37.6% 0.046 251.4)
-
Step 950
950
#1C2734
oklch(26.9% 0.029 253)
#90ACCB 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) | #A1ADCD | 0.023 |
| Deuteranopia (no green cones) | #9AA6CA | 0.019 |
| Tritanopia (no blue cones) | #7FB3B6 | 0.047 |
| Achromatopsia (no color) | #A9A9A9 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90ACCB
#90ACCB
oklch(73.4% 0.055 251.2)
- #BFA484
#BFA484
oklch(73.4% 0.054 71.6)
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 #90ACCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.034
- Bluegrey #85A3B2 ΔE 0.043
- Bluey Grey #89A0B0 ΔE 0.046
- Light Grey Blue #9DBCD4 ΔE 0.047
- Cool Grey #95A3A6 ΔE 0.052
- Greyblue #77A1B5 ΔE 0.053
- French Gray #ADB5BD ΔE 0.053
- Dark Gray #A9A9A9 ΔE 0.055
Use #90ACCB 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.