#90ACD2
Closest named color: Cool Steel (#97A7B3). oklch(73.7% 0.063 256.1), rgb(144, 172, 210).
Aa
Black text reads best on this color (9.01:1).
About this color
#90ACD2 is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.063 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.043 away. Black text reads best on it, at 9.01:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.01:1 |
| White text | 2.32:1 |
Values
| HEX | #90ACD2 |
| RGB | rgb(144, 172, 210) |
| HSL | hsl(215, 42%, 69%) |
| OKLCH | oklch(73.7% 0.063 256.1) |
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 #90ACD2 | 2.32:1 | Fails | Lc -50.8 | Large or bold text, headings |
| Black text on #90ACD2 | 9.01:1 | AAA | Lc 58.1 | Large or bold text, headings |
| #90ACD2 text on white | 2.32:1 | Fails | Lc 45.9 | Large or bold text, headings |
| #90ACD2 text on black | 9.01:1 | AAA | Lc -56.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE8
oklch(88.5% 0.022 256.7)
-
Step 300
300
#B0C2DB
oklch(80.8% 0.041 256.6)
-
Step 400
400 (this color)
#90ACD2
oklch(73.7% 0.063 256.1)
-
Step 500
500
#698BBA
oklch(63% 0.081 256.6)
-
Step 600
600
#5075A6
oklch(55.6% 0.088 255.8)
-
Step 700
700
#41628F
oklch(49.1% 0.082 256.4)
-
Step 800
800
#365074
oklch(42.7% 0.068 256.7)
-
Step 900
900
#2F435D
oklch(37.8% 0.052 255.3)
-
Step 950
950
#1C2737
oklch(27% 0.034 257.7)
#90ACD2 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) | #9FADD4 | 0.020 |
| Deuteranopia (no green cones) | #97A7D1 | 0.015 |
| Tritanopia (no blue cones) | #7CB4B9 | 0.055 |
| Achromatopsia (no color) | #AAAAAA | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90ACD2
#90ACD2
oklch(73.7% 0.063 256.1)
- #C1A57D
#C1A57D
oklch(73.7% 0.063 76.3)
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 #90ACD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.043
- Light Grey Blue #9DBCD4 ΔE 0.048
- Bluegrey #85A3B2 ΔE 0.051
- Bluey Grey #89A0B0 ΔE 0.054
- Light Cornflower Blue #98C1D9 ΔE 0.058
- French Gray #ADB5BD ΔE 0.059
- Greyblue #77A1B5 ΔE 0.059
- Cool Grey #95A3A6 ΔE 0.062
Use #90ACD2 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.