#90A1BF
Closest named color: Bluey Grey (#89A0B0). oklch(70.6% 0.048 261.8), rgb(144, 161, 191).
Aa
Black text reads best on this color (8.03:1).
About this color
#90A1BF is a medium-light, muted blue. In OKLCH its lightness is 71%, its chroma 0.048 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Grey (#89A0B0), ΔE 0.025 away. Black text reads best on it, at 8.03:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Bluey Grey (#89A0B0) |
| Black text | 8.03:1 |
| White text | 2.61:1 |
Values
| HEX | #90A1BF |
| RGB | rgb(144, 161, 191) |
| HSL | hsl(218, 27%, 66%) |
| OKLCH | oklch(70.6% 0.048 261.8) |
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 #90A1BF | 2.61:1 | Fails | Lc -56.1 | Large or bold text, headings |
| Black text on #90A1BF | 8.03:1 | AAA | Lc 53.0 | Large or bold text, headings |
| #90A1BF text on white | 2.61:1 | Fails | Lc 51.0 | Large or bold text, headings |
| #90A1BF text on black | 8.03:1 | AAA | Lc -50.9 | 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
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D3D9E4
oklch(88.4% 0.016 262.7)
-
Step 300
300
#B6C1D5
oklch(80.9% 0.031 262.5)
-
Step 400
400 (this color)
#90A1BF
oklch(70.6% 0.048 261.8)
-
Step 500
500
#758AAF
oklch(63.1% 0.061 261.6)
-
Step 600
600
#5E749B
oklch(55.7% 0.066 261.6)
-
Step 700
700
#4D6184
oklch(49.1% 0.062 261.3)
-
Step 800
800
#3F4F6B
oklch(42.6% 0.051 261.4)
-
Step 900
900
#364257
oklch(37.7% 0.039 261.5)
-
Step 950
950
#202733
oklch(27.1% 0.025 261.1)
#90A1BF 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) | #97A3C0 | 0.011 |
| Deuteranopia (no green cones) | #939EBE | 0.008 |
| Tritanopia (no blue cones) | #84A7AB | 0.042 |
| Achromatopsia (no color) | #A0A0A0 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A1BF
#90A1BF
oklch(70.6% 0.048 261.8)
- #B09E7F
#B09E7F
oklch(70.7% 0.048 81.2)
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 #90A1BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Grey #89A0B0 ΔE 0.025
- Bluegrey #85A3B2 ΔE 0.027
- Cool Gray #8D99AE ΔE 0.029
- Cool Steel #97A7B3 ΔE 0.030
- Greyblue #77A1B5 ΔE 0.036
- Cool Grey #95A3A6 ΔE 0.040
- Pewter #96A8A1 ΔE 0.054
- Dark Gray #A9A9A9 ΔE 0.056
Use #90A1BF 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.