#8B91AB
Closest named color: Cool Gray (#8D99AE). oklch(66.1% 0.039 275), rgb(139, 145, 171).
Aa
Black text reads best on this color (6.73:1).
About this color
#8B91AB is a medium-light, muted blue. In OKLCH its lightness is 66%, its chroma 0.039 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.022 away. Black text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 6.73:1 |
| White text | 3.11:1 |
Values
| HEX | #8B91AB |
| RGB | rgb(139, 145, 171) |
| HSL | hsl(229, 16%, 61%) |
| OKLCH | oklch(66.1% 0.039 275) |
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 #8B91AB | 3.11:1 | AA large text | Lc -63.6 | Content text, not long reading |
| Black text on #8B91AB | 6.73:1 | AA | Lc 45.9 | Large or bold text, headings |
| #8B91AB text on white | 3.11:1 | AA large text | Lc 58.2 | Large or bold text, headings |
| #8B91AB text on black | 6.73:1 | AA | Lc -43.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9EAEE
oklch(93.7% 0.005 275)
-
Step 200
200
#D7D9E0
oklch(88.6% 0.01 273.3)
-
Step 300
300
#BDC0CD
oklch(80.9% 0.018 275.6)
-
Step 400
400
#9BA0B4
oklch(70.8% 0.03 274.5)
-
Step 500
500 (this color)
#8B91AB
oklch(66.1% 0.039 275)
-
Step 600
600
#6C728D
oklch(55.7% 0.043 275.1)
-
Step 700
700
#5A5F78
oklch(49.1% 0.041 276)
-
Step 800
800
#494E61
oklch(42.7% 0.032 273.4)
-
Step 900
900
#3D414F
oklch(37.7% 0.025 272.6)
-
Step 950
950
#24262F
oklch(27% 0.017 275.4)
#8B91AB 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) | #8A93AC | 0.005 |
| Deuteranopia (no green cones) | #8891AA | 0.005 |
| Tritanopia (no blue cones) | #849699 | 0.036 |
| Achromatopsia (no color) | #929292 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8B91AB
#8B91AB
oklch(66.1% 0.039 275)
- #9A9378
#9A9378
oklch(66.2% 0.039 95.2)
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 #8B91AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.022
- Silver Lake Blue #778DA9 ΔE 0.031
- Blue Grey #758DA3 ΔE 0.035
- Bluey Grey #89A0B0 ΔE 0.040
- Light Slate Gray #778899 ΔE 0.045
- Greyblue #77A1B5 ΔE 0.046
- Bluegrey #85A3B2 ΔE 0.048
- Heather #A484AC ΔE 0.049
Use #8B91AB 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.