#403B2B
Closest named color: Charcoal Grey (#3C4142). oklch(35.3% 0.027 92.8), rgb(64, 59, 43).
Aa
White text reads best on this color (11.17:1).
About this color
#403B2B is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.036 away. White text reads best on it, at 11.17:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.87:1 |
| White text | 11.17:1 |
Values
| HEX | #403B2B |
| RGB | rgb(64, 59, 43) |
| HSL | hsl(46, 20%, 21%) |
| OKLCH | oklch(35.3% 0.027 92.8) |
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 #403B2B | 11.17:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #403B2B | 1.87:1 | Fails | Lc 8.0 | Not readable |
| #403B2B text on white | 11.17:1 | AAA | Lc 95.8 | Preferred for body text |
| #403B2B text on black | 1.87:1 | 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EBEAE5
oklch(93.6% 0.007 97.4)
-
Step 200
200
#DBD9D1
oklch(88.5% 0.011 95.2)
-
Step 300
300
#C5C1B2
oklch(81% 0.021 94.6)
-
Step 400
400
#A7A08A
oklch(70.6% 0.032 92.4)
-
Step 500
500
#92896D
oklch(63% 0.041 92.3)
-
Step 600
600
#7C7355
oklch(55.6% 0.045 93.4)
-
Step 700
700
#696045
oklch(49% 0.042 91.8)
-
Step 800
800
#554F39
oklch(42.7% 0.035 94.7)
-
Step 900
900 (this color)
#403B2B
oklch(35.3% 0.027 92.8)
-
Step 950
950
#29261D
oklch(26.9% 0.017 91.8)
#403B2B 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) | #3E3A2A | 0.005 |
| Deuteranopia (no green cones) | #403C2C | 0.003 |
| Tritanopia (no blue cones) | #433937 | 0.024 |
| Achromatopsia (no color) | #3B3B3B | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403B2B
#403B2B
oklch(35.3% 0.027 92.8)
- #363A4A
#363A4A
oklch(35.1% 0.028 273.9)
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 #403B2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.036
- Onyx #343A40 ΔE 0.040
- Pakistan Green #283618 ΔE 0.054
- Dark Olive #373E02 ΔE 0.055
- Gunmetal #293241 ΔE 0.068
- Charcoal #264653 ΔE 0.069
- Dark Slate Gray #2F4F4F ΔE 0.072
- Dark Blue Grey #1F3B4D ΔE 0.072
Use #403B2B 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.