#999DB6
Closest named color: Cool Gray (#8D99AE). oklch(70.1% 0.037 278.2), rgb(153, 157, 182).
Aa
Black text reads best on this color (7.85:1).
About this color
#999DB6 is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.037 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.023 away. Black text reads best on it, at 7.85:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.85:1 |
| White text | 2.67:1 |
Values
| HEX | #999DB6 |
| RGB | rgb(153, 157, 182) |
| HSL | hsl(232, 17%, 66%) |
| OKLCH | oklch(70.1% 0.037 278.2) |
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 #999DB6 | 2.67:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #999DB6 | 7.85:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #999DB6 text on white | 2.67:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #999DB6 text on black | 7.85:1 | AAA | Lc -49.9 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D7D8E2
oklch(88.4% 0.014 281.5)
-
Step 300
300
#BDBFD0
oklch(80.8% 0.024 280.5)
-
Step 400
400 (this color)
#999DB6
oklch(70.1% 0.037 278.2)
-
Step 500
500
#8287A6
oklch(63% 0.047 277.8)
-
Step 600
600
#6C7191
oklch(55.6% 0.05 277.7)
-
Step 700
700
#5A5E7C
oklch(49% 0.048 278.5)
-
Step 800
800
#4A4D65
oklch(42.7% 0.04 279)
-
Step 900
900
#3E4052
oklch(37.7% 0.031 279.8)
-
Step 950
950
#242630
oklch(27.1% 0.019 276.2)
#999DB6 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) | #979FB7 | 0.006 |
| Deuteranopia (no green cones) | #959DB5 | 0.006 |
| Tritanopia (no blue cones) | #93A1A5 | 0.032 |
| Achromatopsia (no color) | #9E9E9E | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999DB6
#999DB6
oklch(70.1% 0.037 278.2)
- #A49F86
#A49F86
oklch(70% 0.036 97.9)
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 #999DB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.023
- Bluey Grey #89A0B0 ΔE 0.026
- Cool Steel #97A7B3 ΔE 0.030
- Bluegrey #85A3B2 ΔE 0.032
- Cool Grey #95A3A6 ΔE 0.034
- Greyblue #77A1B5 ΔE 0.044
- Dark Gray #A9A9A9 ΔE 0.050
- Pewter #96A8A1 ΔE 0.051
Use #999DB6 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.