#90AECC
Closest named color: Cool Steel (#97A7B3). oklch(73.9% 0.055 248.6), rgb(144, 174, 204).
Aa
Black text reads best on this color (9.11:1).
About this color
#90AECC is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.055 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.036 away. Black text reads best on it, at 9.11:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.11:1 |
| White text | 2.30:1 |
Values
| HEX | #90AECC |
| RGB | rgb(144, 174, 204) |
| HSL | hsl(210, 37%, 68%) |
| OKLCH | oklch(73.9% 0.055 248.6) |
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 #90AECC | 2.30:1 | Fails | Lc -50.3 | Large or bold text, headings |
| Black text on #90AECC | 9.11:1 | AAA | Lc 58.5 | Large or bold text, headings |
| #90AECC text on white | 2.30:1 | Fails | Lc 45.4 | Large or bold text, headings |
| #90AECC text on black | 9.11:1 | AAA | Lc -56.7 | 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
#D0DAE5
oklch(88.4% 0.019 250.6)
-
Step 300
300
#B0C3D6
oklch(80.9% 0.034 248.2)
-
Step 400
400 (this color)
#90AECC
oklch(73.9% 0.055 248.6)
-
Step 500
500
#688DB2
oklch(63% 0.07 249)
-
Step 600
600
#4F779E
oklch(55.6% 0.076 248.7)
-
Step 700
700
#3F6487
oklch(49.1% 0.071 248.1)
-
Step 800
800
#35526E
oklch(42.8% 0.058 248.5)
-
Step 900
900
#2E4459
oklch(37.8% 0.046 248)
-
Step 950
950
#1B2834
oklch(27.1% 0.029 246.9)
#90AECC 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) | #A3AECD | 0.025 |
| Deuteranopia (no green cones) | #9BA8CB | 0.020 |
| Tritanopia (no blue cones) | #7EB5B8 | 0.046 |
| Achromatopsia (no color) | #ABABAB | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90AECC
#90AECC
oklch(73.9% 0.055 248.6)
- #C2A586
#C2A586
oklch(74% 0.055 68.7)
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 #90AECC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.036
- Light Grey Blue #9DBCD4 ΔE 0.042
- Bluegrey #85A3B2 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.050
- French Gray #ADB5BD ΔE 0.050
- Light Cornflower Blue #98C1D9 ΔE 0.053
- Cool Grey #95A3A6 ΔE 0.054
- Dark Gray #A9A9A9 ΔE 0.055
Use #90AECC 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.