#90A5CA
Closest named color: Cool Steel (#97A7B3). oklch(71.9% 0.059 261.7), rgb(144, 165, 202).
Aa
Black text reads best on this color (8.42:1).
About this color
#90A5CA is a medium-light, muted blue. In OKLCH its lightness is 72%, its chroma 0.059 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.037 away. Black text reads best on it, at 8.42:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.42:1 |
| White text | 2.49:1 |
Values
| HEX | #90A5CA |
| RGB | rgb(144, 165, 202) |
| HSL | hsl(218, 35%, 68%) |
| OKLCH | oklch(71.9% 0.059 261.7) |
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 #90A5CA | 2.49:1 | Fails | Lc -54.0 | Large or bold text, headings |
| Black text on #90A5CA | 8.42:1 | AAA | Lc 55.0 | Large or bold text, headings |
| #90A5CA text on white | 2.49:1 | Fails | Lc 49.0 | Large or bold text, headings |
| #90A5CA text on black | 8.42:1 | AAA | Lc -53.0 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2DAE7
oklch(88.6% 0.02 260.2)
-
Step 300
300
#B4C1D9
oklch(80.9% 0.037 262.8)
-
Step 400
400 (this color)
#90A5CA
oklch(71.9% 0.059 261.7)
-
Step 500
500
#708AB8
oklch(63.1% 0.076 261.6)
-
Step 600
600
#5873A4
oklch(55.5% 0.083 261.9)
-
Step 700
700
#48618C
oklch(49.2% 0.076 260.9)
-
Step 800
800
#3C4F72
oklch(42.8% 0.063 262.1)
-
Step 900
900
#33425C
oklch(37.8% 0.049 261.1)
-
Step 950
950
#1E2736
oklch(27.1% 0.031 260.5)
#90A5CA 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) | #99A7CC | 0.014 |
| Deuteranopia (no green cones) | #93A2C9 | 0.008 |
| Tritanopia (no blue cones) | #80ADB1 | 0.054 |
| Achromatopsia (no color) | #A4A4A4 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A5CA
#90A5CA
oklch(71.9% 0.059 261.7)
- #B7A17A
#B7A17A
oklch(71.9% 0.059 81.7)
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 #90A5CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.037
- Bluegrey #85A3B2 ΔE 0.039
- Bluey Grey #89A0B0 ΔE 0.040
- Cool Gray #8D99AE ΔE 0.046
- Greyblue #77A1B5 ΔE 0.046
- Cool Grey #95A3A6 ΔE 0.052
- Dark Gray #A9A9A9 ΔE 0.061
- Pewter #96A8A1 ΔE 0.064
Use #90A5CA 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.