#8A91B9
Closest named color: Cool Gray (#8D99AE). oklch(66.5% 0.06 276.9), rgb(138, 145, 185).
Aa
Black text reads best on this color (6.83:1).
About this color
#8A91B9 is a medium-light, muted blue. In OKLCH its lightness is 67%, its chroma 0.060 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.032 away. Black text reads best on it, at 6.83:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 6.83:1 |
| White text | 3.07:1 |
Values
| HEX | #8A91B9 |
| RGB | rgb(138, 145, 185) |
| HSL | hsl(231, 25%, 63%) |
| OKLCH | oklch(66.5% 0.06 276.9) |
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 #8A91B9 | 3.07:1 | AA large text | Lc -63.0 | Content text, not long reading |
| Black text on #8A91B9 | 6.83:1 | AA | Lc 46.4 | Large or bold text, headings |
| #8A91B9 text on white | 3.07:1 | AA large text | Lc 57.6 | Large or bold text, headings |
| #8A91B9 text on black | 6.83:1 | AA | Lc -44.1 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E4
oklch(88.4% 0.017 278.5)
-
Step 300
300
#BBBFD4
oklch(80.8% 0.03 277.1)
-
Step 400
400
#999EBE
oklch(70.6% 0.047 278.1)
-
Step 500
500 (this color)
#8A91B9
oklch(66.5% 0.06 276.9)
-
Step 600
600
#69709A
oklch(55.6% 0.066 276.7)
-
Step 700
700
#585E83
oklch(49.2% 0.06 276.9)
-
Step 800
800
#484D6B
oklch(42.8% 0.05 276.8)
-
Step 900
900
#3C4056
oklch(37.7% 0.038 276.4)
-
Step 950
950
#232533
oklch(26.9% 0.026 278.2)
#8A91B9 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) | #8695BB | 0.011 |
| Deuteranopia (no green cones) | #8391B8 | 0.010 |
| Tritanopia (no blue cones) | #7F989F | 0.052 |
| Achromatopsia (no color) | #939393 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8A91B9
#8A91B9
oklch(66.5% 0.06 276.9)
- #9E946A
#9E946A
oklch(66.5% 0.059 96.3)
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 #8A91B9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.032
- Silver Lake Blue #778DA9 ΔE 0.037
- Blue Grey #758DA3 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.048
- Heather #A484AC ΔE 0.048
- Greyblue #77A1B5 ΔE 0.051
- Faded Blue #658CBB ΔE 0.051
- Bluegrey #85A3B2 ΔE 0.055
Use #8A91B9 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.