#403D2B
Closest named color: Charcoal Grey (#3C4142). oklch(35.8% 0.03 99.7), rgb(64, 61, 43).
Aa
White text reads best on this color (10.93:1).
About this color
#403D2B is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.035 away. White text reads best on it, at 10.93:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.92:1 |
| White text | 10.93:1 |
Values
| HEX | #403D2B |
| RGB | rgb(64, 61, 43) |
| HSL | hsl(51, 20%, 21%) |
| OKLCH | oklch(35.8% 0.03 99.7) |
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 #403D2B | 10.93:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #403D2B | 1.92:1 | Fails | Lc 8.6 | Not readable |
| #403D2B text on white | 10.93:1 | AAA | Lc 95.3 | Preferred for body text |
| #403D2B text on black | 1.92:1 | Fails | Lc -7.3 | 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
#DBD9D0
oklch(88.4% 0.012 96.4)
-
Step 300
300
#C4C1B1
oklch(80.9% 0.022 98.2)
-
Step 400
400
#A5A188
oklch(70.6% 0.035 99.7)
-
Step 500
500
#908A6B
oklch(63% 0.045 98.4)
-
Step 600
600
#7A7453
oklch(55.6% 0.048 99.1)
-
Step 700
700
#676243
oklch(49.2% 0.047 100.1)
-
Step 800
800
#545037
oklch(42.8% 0.039 100.1)
-
Step 900
900 (this color)
#403D2B
oklch(35.8% 0.03 99.7)
-
Step 950
950
#28271C
oklch(27% 0.019 103.3)
#403D2B 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) | #403C2A | 0.003 |
| Deuteranopia (no green cones) | #413D2C | 0.003 |
| Tritanopia (no blue cones) | #433A38 | 0.027 |
| Achromatopsia (no color) | #3D3D3D | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403D2B
#403D2B
oklch(35.8% 0.03 99.7)
- #393B4C
#393B4C
oklch(35.7% 0.03 279.5)
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 #403D2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.035
- Onyx #343A40 ΔE 0.043
- Dark Olive #373E02 ΔE 0.052
- Pakistan Green #283618 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.068
- Charcoal #264653 ΔE 0.068
- Evergreen #05472A ΔE 0.069
- Gunmetal #293241 ΔE 0.072
Use #403D2B 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.