#8991BF
Closest named color: Cool Gray (#8D99AE). oklch(66.7% 0.069 276.7), rgb(137, 145, 191).
Aa
Black text reads best on this color (6.86:1).
About this color
#8991BF is a medium-light, muted blue. In OKLCH its lightness is 67%, its chroma 0.069 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.039 away. Black text reads best on it, at 6.86:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 6.86:1 |
| White text | 3.05:1 |
Values
| HEX | #8991BF |
| RGB | rgb(137, 145, 191) |
| HSL | hsl(231, 30%, 64%) |
| OKLCH | oklch(66.7% 0.069 276.7) |
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 #8991BF | 3.05:1 | AA large text | Lc -62.8 | Content text, not long reading |
| Black text on #8991BF | 6.86:1 | AA | Lc 46.6 | Large or bold text, headings |
| #8991BF text on white | 3.05:1 | AA large text | Lc 57.4 | Large or bold text, headings |
| #8991BF text on black | 6.86:1 | AA | Lc -44.3 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BABFD7
oklch(80.8% 0.034 276.3)
-
Step 400
400
#979EC3
oklch(70.7% 0.055 276.5)
-
Step 500
500 (this color)
#8991BF
oklch(66.7% 0.069 276.7)
-
Step 600
600
#686F9F
oklch(55.5% 0.075 277.3)
-
Step 700
700
#565D88
oklch(49.1% 0.069 276.4)
-
Step 800
800
#474C6F
oklch(42.7% 0.058 277.4)
-
Step 900
900
#3B405A
oklch(37.8% 0.045 275.6)
-
Step 950
950
#232534
oklch(26.9% 0.028 278.4)
#8991BF 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) | #8496C1 | 0.014 |
| Deuteranopia (no green cones) | #8091BE | 0.012 |
| Tritanopia (no blue cones) | #7B9AA1 | 0.062 |
| Achromatopsia (no color) | #939393 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8991BF
#8991BF
oklch(66.7% 0.069 276.7)
- #A09563
#A09563
oklch(66.7% 0.069 97.3)
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 #8991BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.039
- Silver Lake Blue #778DA9 ΔE 0.043
- Faded Blue #658CBB ΔE 0.050
- Heather #A484AC ΔE 0.051
- Blue Grey #758DA3 ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.054
- Greyblue #77A1B5 ΔE 0.055
- Bluegrey #85A3B2 ΔE 0.059
Use #8991BF 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.