#403D34
Closest named color: Charcoal Grey (#3C4142). oklch(36% 0.016 91.7), rgb(64, 61, 52).
Aa
White text reads best on this color (10.85:1).
About this color
#403D34 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.023 away. White text reads best on it, at 10.85:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.93:1 |
| White text | 10.85:1 |
Values
| HEX | #403D34 |
| RGB | rgb(64, 61, 52) |
| HSL | hsl(45, 10%, 23%) |
| OKLCH | oklch(36% 0.016 91.7) |
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 #403D34 | 10.85:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #403D34 | 1.93:1 | Fails | Lc 8.7 | Not readable |
| #403D34 text on white | 10.85:1 | AAA | Lc 95.2 | Preferred for body text |
| #403D34 text on black | 1.93:1 | Fails | Lc -7.5 | 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
#EAEAE7
oklch(93.6% 0.004 106.5)
-
Step 200
200
#DAD9D4
oklch(88.5% 0.007 97.4)
-
Step 300
300
#C3C0B8
oklch(80.8% 0.012 89.7)
-
Step 400
400
#A5A094
oklch(70.6% 0.018 88)
-
Step 500
500
#8F8979
oklch(63.1% 0.024 89.9)
-
Step 600
600
#797362
oklch(55.6% 0.026 90.9)
-
Step 700
700
#666151
oklch(49.2% 0.025 92.7)
-
Step 800
800
#534F43
oklch(42.8% 0.02 91.7)
-
Step 900
900 (this color)
#403D34
oklch(36% 0.016 91.7)
-
Step 950
950
#282621
oklch(26.9% 0.009 88.8)
#403D34 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) | #3F3D33 | 0.003 |
| Deuteranopia (no green cones) | #403D34 | 0.000 |
| Tritanopia (no blue cones) | #423C3A | 0.012 |
| Achromatopsia (no color) | #3D3D3D | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403D34
#403D34
oklch(36% 0.016 91.7)
- #3A3D46
#3A3D46
oklch(36.1% 0.016 270.9)
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 #403D34, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.023
- Onyx #343A40 ΔE 0.032
- Charcoal #264653 ΔE 0.058
- Dark Slate Gray #2F4F4F ΔE 0.062
- Gunmetal #293241 ΔE 0.063
- Pakistan Green #283618 ΔE 0.064
- Dark Blue Grey #1F3B4D ΔE 0.064
- Dark Olive #373E02 ΔE 0.066
Use #403D34 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.