#403B2E
Closest named color: Charcoal Grey (#3C4142). oklch(35.3% 0.023 89.5), rgb(64, 59, 46).
Aa
White text reads best on this color (11.15:1).
About this color
#403B2E is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.032 away. White text reads best on it, at 11.15:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.88:1 |
| White text | 11.15:1 |
Values
| HEX | #403B2E |
| RGB | rgb(64, 59, 46) |
| HSL | hsl(43, 16%, 22%) |
| OKLCH | oklch(35.3% 0.023 89.5) |
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 #403B2E | 11.15:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #403B2E | 1.88:1 | Fails | Lc 8.1 | Not readable |
| #403B2E text on white | 11.15:1 | AAA | Lc 95.8 | Preferred for body text |
| #403B2E text on black | 1.88:1 | 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
#F6F5F4
oklch(97.1% 0.002 67.8)
-
Step 100
100
#EBEAE6
oklch(93.7% 0.005 95.1)
-
Step 200
200
#DBD9D2
oklch(88.5% 0.01 93.6)
-
Step 300
300
#C5C0B5
oklch(80.9% 0.016 86.4)
-
Step 400
400
#A7A08E
oklch(70.7% 0.027 89.3)
-
Step 500
500
#928972
oklch(63.2% 0.035 89.2)
-
Step 600
600
#7C735A
oklch(55.7% 0.038 90.6)
-
Step 700
700
#69604A
oklch(49.1% 0.035 88.4)
-
Step 800
800
#554E3D
oklch(42.6% 0.028 88.3)
-
Step 900
900 (this color)
#403B2E
oklch(35.3% 0.023 89.5)
-
Step 950
950
#29261F
oklch(26.9% 0.013 87.6)
#403B2E 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) | #3E3A2D | 0.005 |
| Deuteranopia (no green cones) | #3F3C2E | 0.004 |
| Tritanopia (no blue cones) | #433937 | 0.019 |
| Achromatopsia (no color) | #3B3B3B | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403B2E
#403B2E
oklch(35.3% 0.023 89.5)
- #373B48
#373B48
oklch(35.4% 0.023 271.7)
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 #403B2E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.032
- Onyx #343A40 ΔE 0.036
- Pakistan Green #283618 ΔE 0.057
- Dark Olive #373E02 ΔE 0.059
- Gunmetal #293241 ΔE 0.065
- Charcoal #264653 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.068
- Dark Slate Gray #2F4F4F ΔE 0.070
Use #403B2E 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.