#999BAB
Closest named color: Cool Gray (#8D99AE). oklch(69.3% 0.023 280.1), rgb(153, 155, 171).
Aa
Black text reads best on this color (7.63:1).
About this color
#999BAB is a medium-light close to neutral grey. In OKLCH its lightness is 69%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Cool Gray (#8D99AE), ΔE 0.019 away. Black text reads best on it, at 7.63:1.
| Hue family | Neutrals |
| Lightness | medium-light (69%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.63:1 |
| White text | 2.75:1 |
Values
| HEX | #999BAB |
| RGB | rgb(153, 155, 171) |
| HSL | hsl(233, 10%, 64%) |
| OKLCH | oklch(69.3% 0.023 280.1) |
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 #999BAB | 2.75:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #999BAB | 7.63:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #999BAB text on white | 2.75:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #999BAB text on black | 7.63:1 | AAA | Lc -48.7 | 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
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D8D9DE
oklch(88.6% 0.007 277.2)
-
Step 300
300
#BEC0CA
oklch(80.9% 0.014 277)
-
Step 400
400 (this color)
#999BAB
oklch(69.3% 0.023 280.1)
-
Step 500
500
#85889C
oklch(63.1% 0.03 278.7)
-
Step 600
600
#6F7287
oklch(55.7% 0.033 278.9)
-
Step 700
700
#5D5F72
oklch(49.1% 0.03 280.5)
-
Step 800
800
#4C4E5D
oklch(42.8% 0.025 279.3)
-
Step 900
900
#3F414C
oklch(37.8% 0.019 277.3)
-
Step 950
950
#25262D
oklch(27.1% 0.013 279.1)
#999BAB 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) | #979CAC | 0.004 |
| Deuteranopia (no green cones) | #969BAB | 0.004 |
| Tritanopia (no blue cones) | #959EA0 | 0.022 |
| Achromatopsia (no color) | #9C9C9C | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999BAB
#999BAB
oklch(69.3% 0.023 280.1)
- #9F9D8D
#9F9D8D
oklch(69.3% 0.023 101.1)
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 #999BAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.019
- Bluey Grey #89A0B0 ΔE 0.023
- Cool Grey #95A3A6 ΔE 0.026
- Bluegrey #85A3B2 ΔE 0.031
- Cool Steel #97A7B3 ΔE 0.031
- Pewter #96A8A1 ΔE 0.044
- Greyblue #77A1B5 ΔE 0.044
- Dark Gray #A9A9A9 ΔE 0.048
Use #999BAB 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.