#8C91BB
Closest named color: Cool Gray (#8D99AE). oklch(66.8% 0.062 279.3), rgb(140, 145, 187).
Aa
Black text reads best on this color (6.88:1).
About this color
#8C91BB is a medium-light, muted blue. In OKLCH its lightness is 67%, its chroma 0.062 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.034 away. Black text reads best on it, at 6.88:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 6.88:1 |
| White text | 3.05:1 |
Values
| HEX | #8C91BB |
| RGB | rgb(140, 145, 187) |
| HSL | hsl(234, 26%, 64%) |
| OKLCH | oklch(66.8% 0.062 279.3) |
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 #8C91BB | 3.05:1 | AA large text | Lc -62.7 | Content text, not long reading |
| Black text on #8C91BB | 6.88:1 | AA | Lc 46.7 | Large or bold text, headings |
| #8C91BB text on white | 3.05:1 | AA large text | Lc 57.3 | Large or bold text, headings |
| #8C91BB text on black | 6.88:1 | AA | Lc -44.4 | 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
#D6D8E5
oklch(88.5% 0.018 279)
-
Step 300
300
#BCBFD5
oklch(80.9% 0.031 279.5)
-
Step 400
400
#9A9EBF
oklch(70.7% 0.048 279.7)
-
Step 500
500 (this color)
#8C91BB
oklch(66.8% 0.062 279.3)
-
Step 600
600
#6B6F9B
oklch(55.6% 0.068 279.9)
-
Step 700
700
#595D84
oklch(49.1% 0.063 279.3)
-
Step 800
800
#494C6B
oklch(42.7% 0.051 279.7)
-
Step 900
900
#3D3F57
oklch(37.6% 0.041 280.5)
-
Step 950
950
#242533
oklch(27% 0.026 281.3)
#8C91BB 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) | #8595BD | 0.013 |
| Deuteranopia (no green cones) | #8392BA | 0.013 |
| Tritanopia (no blue cones) | #81999F | 0.057 |
| Achromatopsia (no color) | #949494 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8C91BB
#8C91BB
oklch(66.8% 0.062 279.3)
- #9E9669
#9E9669
oklch(66.9% 0.063 99.3)
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 #8C91BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.034
- Silver Lake Blue #778DA9 ΔE 0.042
- Heather #A484AC ΔE 0.047
- Bluey Grey #89A0B0 ΔE 0.050
- Blue Grey #758DA3 ΔE 0.050
- Greyblue #77A1B5 ΔE 0.053
- Faded Blue #658CBB ΔE 0.054
- Dusty Lavender #AC86A8 ΔE 0.055
Use #8C91BB 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.