#999EBA
Closest named color: Cool Gray (#8D99AE). oklch(70.5% 0.041 277.3), rgb(153, 158, 186).
Aa
Black text reads best on this color (7.95:1).
About this color
#999EBA is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.041 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.027 away. Black text reads best on it, at 7.95:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.95:1 |
| White text | 2.64:1 |
Values
| HEX | #999EBA |
| RGB | rgb(153, 158, 186) |
| HSL | hsl(231, 19%, 66%) |
| OKLCH | oklch(70.5% 0.041 277.3) |
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 #999EBA | 2.64:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #999EBA | 7.95:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #999EBA text on white | 2.64:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #999EBA text on black | 7.95:1 | AAA | Lc -50.5 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9EF
oklch(93.5% 0.008 278.6)
-
Step 200
200
#D6D8E3
oklch(88.4% 0.015 277.8)
-
Step 300
300
#BCBFD2
oklch(80.8% 0.027 278.6)
-
Step 400
400 (this color)
#999EBA
oklch(70.5% 0.041 277.3)
-
Step 500
500
#8187AA
oklch(63.1% 0.053 277.2)
-
Step 600
600
#6B7095
oklch(55.5% 0.058 278.4)
-
Step 700
700
#595E7F
oklch(49.1% 0.053 277.6)
-
Step 800
800
#494D67
oklch(42.7% 0.043 277.6)
-
Step 900
900
#3D4054
oklch(37.7% 0.034 278)
-
Step 950
950
#242631
oklch(27.1% 0.021 276.9)
#999EBA 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) | #97A1BB | 0.008 |
| Deuteranopia (no green cones) | #959EB9 | 0.006 |
| Tritanopia (no blue cones) | #92A3A7 | 0.037 |
| Achromatopsia (no color) | #9F9F9F | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999EBA
#999EBA
oklch(70.5% 0.041 277.3)
- #A7A083
#A7A083
oklch(70.4% 0.041 96)
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 #999EBA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.027
- Bluey Grey #89A0B0 ΔE 0.028
- Cool Steel #97A7B3 ΔE 0.030
- Bluegrey #85A3B2 ΔE 0.033
- Cool Grey #95A3A6 ΔE 0.037
- Greyblue #77A1B5 ΔE 0.045
- Dark Gray #A9A9A9 ΔE 0.051
- Pewter #96A8A1 ΔE 0.054
Use #999EBA 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.