#423D28
Closest named color: Charcoal Grey (#3C4142). oklch(35.9% 0.034 96.4), rgb(66, 61, 40).
Aa
White text reads best on this color (10.88:1).
About this color
#423D28 is a dark, muted brown. In OKLCH its lightness is 36%, its chroma 0.034 and its hue 96°. 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 10.88:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | muted (0.034) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.92:1 |
| White text | 10.88:1 |
Values
| HEX | #423D28 |
| RGB | rgb(66, 61, 40) |
| HSL | hsl(48, 25%, 21%) |
| OKLCH | oklch(35.9% 0.034 96.4) |
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 #423D28 | 10.88:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #423D28 | 1.92:1 | Fails | Lc 8.7 | Not readable |
| #423D28 text on white | 10.88:1 | AAA | Lc 95.2 | Preferred for body text |
| #423D28 text on black | 1.92:1 | Fails | Lc -7.4 | 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
#EBEAE4
oklch(93.6% 0.008 98.9)
-
Step 200
200
#DCD9CF
oklch(88.5% 0.014 93)
-
Step 300
300
#C5C1AE
oklch(80.9% 0.026 97.2)
-
Step 400
400
#A8A184
oklch(70.7% 0.041 96)
-
Step 500
500
#938A65
oklch(63.2% 0.053 96.1)
-
Step 600
600
#7D744C
oklch(55.7% 0.058 97)
-
Step 700
700
#69613D
oklch(49.1% 0.054 97.2)
-
Step 800
800
#564F33
oklch(42.7% 0.044 95.8)
-
Step 900
900 (this color)
#423D28
oklch(35.9% 0.034 96.4)
-
Step 950
950
#29271A
oklch(27.1% 0.023 100.4)
#423D28 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) | #413C27 | 0.004 |
| Deuteranopia (no green cones) | #433E29 | 0.004 |
| Tritanopia (no blue cones) | #463A38 | 0.032 |
| Achromatopsia (no color) | #3D3D3D | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423D28
#423D28
oklch(35.9% 0.034 96.4)
- #383B4F
#383B4F
oklch(35.8% 0.035 277.8)
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 #423D28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.040
- Onyx #343A40 ΔE 0.049
- Dark Olive #373E02 ΔE 0.049
- Pakistan Green #283618 ΔE 0.056
- Mud Brown #60460F ΔE 0.070
- Dark Slate Gray #2F4F4F ΔE 0.070
- Evergreen #05472A ΔE 0.070
- Charcoal #264653 ΔE 0.073
Use #423D28 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.