#403628
Closest named color: Onyx (#343A40). oklch(33.9% 0.027 75.9), rgb(64, 54, 40).
Aa
White text reads best on this color (11.82:1).
About this color
#403628 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.041 away. White text reads best on it, at 11.82:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.77:1 |
| White text | 11.82:1 |
Values
| HEX | #403628 |
| RGB | rgb(64, 54, 40) |
| HSL | hsl(35, 23%, 20%) |
| OKLCH | oklch(33.9% 0.027 75.9) |
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 #403628 | 11.82:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #403628 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #403628 text on white | 11.82:1 | AAA | Lc 97.1 | Preferred for body text |
| #403628 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#ECE9E6
oklch(93.6% 0.005 67.8)
-
Step 200
200
#DDD8D1
oklch(88.4% 0.011 76.6)
-
Step 300
300
#C8BFB2
oklch(80.8% 0.021 77.3)
-
Step 400
400
#AD9E8A
oklch(70.7% 0.033 75.1)
-
Step 500
500
#98866E
oklch(63% 0.041 74.9)
-
Step 600
600
#837056
oklch(55.6% 0.045 75.3)
-
Step 700
700
#6F5E46
oklch(49.2% 0.042 76)
-
Step 800
800
#5A4D3A
oklch(42.8% 0.034 77)
-
Step 900
900 (this color)
#403628
oklch(33.9% 0.027 75.9)
-
Step 950
950
#2B251D
oklch(26.8% 0.017 74.9)
#403628 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) | #3A3627 | 0.011 |
| Deuteranopia (no green cones) | #3C3828 | 0.009 |
| Tritanopia (no blue cones) | #443332 | 0.024 |
| Achromatopsia (no color) | #373737 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403628
#403628
oklch(33.9% 0.027 75.9)
- #2F3946
#2F3946
oklch(34.1% 0.027 255.1)
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 #403628, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.045
- Pakistan Green #283618 ΔE 0.051
- Dark Olive #373E02 ΔE 0.060
- Gunmetal #293241 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.072
- Dark Blue Grey #1F3B4D ΔE 0.073
- Charcoal #264653 ΔE 0.078
Use #403628 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.