#8999BB
Closest named color: Cool Gray (#8D99AE). oklch(68.2% 0.054 265.2), rgb(137, 153, 187).
Aa
Black text reads best on this color (7.33:1).
About this color
#8999BB is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.054 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.020 away. Black text reads best on it, at 7.33:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.33:1 |
| White text | 2.86:1 |
Values
| HEX | #8999BB |
| RGB | rgb(137, 153, 187) |
| HSL | hsl(221, 27%, 64%) |
| OKLCH | oklch(68.2% 0.054 265.2) |
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 #8999BB | 2.86:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #8999BB | 7.33:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #8999BB text on white | 2.86:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #8999BB text on black | 7.33:1 | AAA | Lc -47.0 | 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
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D3D9E6
oklch(88.5% 0.019 266)
-
Step 300
300
#B6C1D7
oklch(80.9% 0.033 264.4)
-
Step 400
400 (this color)
#8999BB
oklch(68.2% 0.054 265.2)
-
Step 500
500
#7589B4
oklch(63.1% 0.069 265.1)
-
Step 600
600
#5E739F
oklch(55.7% 0.073 264.5)
-
Step 700
700
#4E6088
oklch(49.1% 0.068 265.4)
-
Step 800
800
#404E6F
oklch(42.6% 0.058 266.3)
-
Step 900
900
#36415A
oklch(37.7% 0.045 265.9)
-
Step 950
950
#202635
oklch(27% 0.029 267.5)
#8999BB 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) | #8E9BBD | 0.009 |
| Deuteranopia (no green cones) | #8A97BA | 0.005 |
| Tritanopia (no blue cones) | #7CA0A4 | 0.049 |
| Achromatopsia (no color) | #999999 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8999BB
#8999BB
oklch(68.2% 0.054 265.2)
- #A89773
#A89773
oklch(68.2% 0.054 85.6)
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 #8999BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.020
- Bluey Grey #89A0B0 ΔE 0.030
- Greyblue #77A1B5 ΔE 0.034
- Bluegrey #85A3B2 ΔE 0.035
- Silver Lake Blue #778DA9 ΔE 0.047
- Cool Steel #97A7B3 ΔE 0.050
- Cool Grey #95A3A6 ΔE 0.051
- Blue Grey #758DA3 ΔE 0.053
Use #8999BB 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.