#403E28
Closest named color: Charcoal Grey (#3C4142). oklch(35.9% 0.035 103.6), rgb(64, 62, 40).
Aa
White text reads best on this color (10.83:1).
About this color
#403E28 is a dark, muted brown. In OKLCH its lightness is 36%, its chroma 0.035 and its hue 104°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.040 away. White text reads best on it, at 10.83:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | muted (0.035) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.93:1 |
| White text | 10.83:1 |
Values
| HEX | #403E28 |
| RGB | rgb(64, 62, 40) |
| HSL | hsl(55, 23%, 20%) |
| OKLCH | oklch(35.9% 0.035 103.6) |
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 #403E28 | 10.83:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #403E28 | 1.93:1 | Fails | Lc 8.8 | Not readable |
| #403E28 text on white | 10.83:1 | AAA | Lc 95.1 | Preferred for body text |
| #403E28 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EAEAE4
oklch(93.5% 0.008 106.6)
-
Step 200
200
#DADACF
oklch(88.5% 0.015 106.7)
-
Step 300
300
#C3C2AE
oklch(80.9% 0.027 104.7)
-
Step 400
400
#A5A284
oklch(70.7% 0.042 102.7)
-
Step 500
500
#8F8B65
oklch(63% 0.054 102.8)
-
Step 600
600
#79754C
oklch(55.5% 0.059 103.4)
-
Step 700
700
#66623D
oklch(49% 0.054 102.9)
-
Step 800
800
#535033
oklch(42.6% 0.045 103.1)
-
Step 900
900 (this color)
#403E28
oklch(35.9% 0.035 103.6)
-
Step 950
950
#28271A
oklch(27% 0.023 104.1)
#403E28 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) | #423C26 | 0.007 |
| Deuteranopia (no green cones) | #433E29 | 0.006 |
| Tritanopia (no blue cones) | #433B38 | 0.032 |
| Achromatopsia (no color) | #3D3D3D | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403E28
#403E28
oklch(35.9% 0.035 103.6)
- #3A3B4F
#3A3B4F
oklch(36% 0.034 282.3)
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 #403E28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.040
- Dark Olive #373E02 ΔE 0.046
- Onyx #343A40 ΔE 0.049
- Pakistan Green #283618 ΔE 0.054
- Evergreen #05472A ΔE 0.066
- Dark Slate Gray #2F4F4F ΔE 0.068
- Mud Brown #60460F ΔE 0.070
- Charcoal #264653 ΔE 0.071
Use #403E28 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.