#403533
Closest named color: Onyx (#343A40). oklch(34% 0.016 30.1), rgb(64, 53, 51).
Aa
White text reads best on this color (11.83:1).
About this color
#403533 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.028 away. White text reads best on it, at 11.83:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.77:1 |
| White text | 11.83:1 |
Values
| HEX | #403533 |
| RGB | rgb(64, 53, 51) |
| HSL | hsl(9, 11%, 23%) |
| OKLCH | oklch(34% 0.016 30.1) |
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 #403533 | 11.83:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #403533 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #403533 text on white | 11.83:1 | AAA | Lc 97.2 | Preferred for body text |
| #403533 text on black | 1.77:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F6F5F5
oklch(97.1% 0.001 17.2)
-
Step 100
100
#ECE9E8
oklch(93.6% 0.004 39.5)
-
Step 200
200
#DDD7D6
oklch(88.4% 0.007 28.8)
-
Step 300
300
#C8BEBC
oklch(80.9% 0.012 31.1)
-
Step 400
400
#AC9C99
oklch(70.6% 0.019 30.3)
-
Step 500
500
#988481
oklch(63.1% 0.025 27.9)
-
Step 600
600
#826E6A
oklch(55.6% 0.026 31.2)
-
Step 700
700
#6E5C58
oklch(49.1% 0.024 32.6)
-
Step 800
800
#5A4B48
oklch(42.7% 0.021 31.2)
-
Step 900
900 (this color)
#403533
oklch(34% 0.016 30.1)
-
Step 950
950
#2B2523
oklch(27% 0.01 39.3)
#403533 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) | #373633 | 0.016 |
| Deuteranopia (no green cones) | #3A3833 | 0.014 |
| Tritanopia (no blue cones) | #433434 | 0.007 |
| Achromatopsia (no color) | #373737 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403533
#403533
oklch(34% 0.016 30.1)
- #2F3A3D
#2F3A3D
oklch(34% 0.016 216.1)
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 #403533, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.039
- Gunmetal #293241 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.061
- Pakistan Green #283618 ΔE 0.064
- Charcoal #264653 ΔE 0.069
- Midnight Green #073B4C ΔE 0.075
Use #403533 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.