#90A0BB
Closest named color: Bluey Grey (#89A0B0). oklch(70.2% 0.044 260.9), rgb(144, 160, 187).
Aa
Black text reads best on this color (7.93:1).
About this color
#90A0BB is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.044 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Grey (#89A0B0), ΔE 0.020 away. Black text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Bluey Grey (#89A0B0) |
| Black text | 7.93:1 |
| White text | 2.64:1 |
Values
| HEX | #90A0BB |
| RGB | rgb(144, 160, 187) |
| HSL | hsl(218, 24%, 65%) |
| OKLCH | oklch(70.2% 0.044 260.9) |
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 #90A0BB | 2.64:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #90A0BB | 7.93:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #90A0BB text on white | 2.64:1 | Fails | Lc 51.6 | Large or bold text, headings |
| #90A0BB text on black | 7.93:1 | AAA | Lc -50.3 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D3D9E3
oklch(88.4% 0.015 260.7)
-
Step 300
300
#B7C1D3
oklch(80.9% 0.028 262.3)
-
Step 400
400 (this color)
#90A0BB
oklch(70.2% 0.044 260.9)
-
Step 500
500
#768AAC
oklch(63% 0.056 261)
-
Step 600
600
#5F7497
oklch(55.6% 0.06 260.5)
-
Step 700
700
#4E6181
oklch(49% 0.057 260.7)
-
Step 800
800
#404F69
oklch(42.6% 0.047 261.2)
-
Step 900
900
#374255
oklch(37.7% 0.036 261.2)
-
Step 950
950
#202732
oklch(27.1% 0.023 259.3)
#90A0BB 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) | #97A1BC | 0.010 |
| Deuteranopia (no green cones) | #939DBA | 0.008 |
| Tritanopia (no blue cones) | #85A5A9 | 0.038 |
| Achromatopsia (no color) | #9F9F9F | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A0BB
#90A0BB
oklch(70.2% 0.044 260.9)
- #AD9D81
#AD9D81
oklch(70.2% 0.043 81.6)
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 #90A0BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Grey #89A0B0 ΔE 0.020
- Bluegrey #85A3B2 ΔE 0.023
- Cool Gray #8D99AE ΔE 0.024
- Cool Steel #97A7B3 ΔE 0.028
- Greyblue #77A1B5 ΔE 0.033
- Cool Grey #95A3A6 ΔE 0.035
- Pewter #96A8A1 ΔE 0.051
- Dark Gray #A9A9A9 ΔE 0.054
Use #90A0BB 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.