#423A28
Closest named color: Charcoal Grey (#3C4142). oklch(35.1% 0.031 86.7), rgb(66, 58, 40).
Aa
White text reads best on this color (11.24:1).
About this color
#423A28 is a dark, muted brown. In OKLCH its lightness is 35%, its chroma 0.031 and its hue 87°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.041 away. White text reads best on it, at 11.24:1.
| Hue family | Browns |
| Lightness | dark (35%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.86:1 |
| White text | 11.24:1 |
Values
| HEX | #423A28 |
| RGB | rgb(66, 58, 40) |
| HSL | hsl(42, 25%, 21%) |
| OKLCH | oklch(35.1% 0.031 86.7) |
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 #423A28 | 11.24:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #423A28 | 1.86:1 | Fails | Lc 7.9 | Not readable |
| #423A28 text on white | 11.24:1 | AAA | Lc 96.0 | Preferred for body text |
| #423A28 text on black | 1.86:1 | 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
#ECEAE5
oklch(93.7% 0.007 88.6)
-
Step 200
200
#DDD9D0
oklch(88.6% 0.013 86.8)
-
Step 300
300
#C7C0B0
oklch(80.9% 0.023 87.2)
-
Step 400
400
#ABA086
oklch(70.8% 0.039 87.8)
-
Step 500
500
#968868
oklch(63.1% 0.048 87.1)
-
Step 600
600
#817250
oklch(55.7% 0.052 86.8)
-
Step 700
700
#6D5F41
oklch(49.1% 0.048 85.7)
-
Step 800
800
#594E35
oklch(42.8% 0.041 86.9)
-
Step 900
900 (this color)
#423A28
oklch(35.1% 0.031 86.7)
-
Step 950
950
#2B261B
oklch(27.1% 0.021 86.4)
#423A28 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) | #3E3A27 | 0.008 |
| Deuteranopia (no green cones) | #403C29 | 0.007 |
| Tritanopia (no blue cones) | #463735 | 0.028 |
| Achromatopsia (no color) | #3B3B3B | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423A28
#423A28
oklch(35.1% 0.031 86.7)
- #333B4C
#333B4C
oklch(35.2% 0.032 265.1)
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 #423A28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.041
- Onyx #343A40 ΔE 0.044
- Dark Olive #373E02 ΔE 0.054
- Pakistan Green #283618 ΔE 0.054
- Gunmetal #293241 ΔE 0.071
- Charcoal #264653 ΔE 0.074
- Evergreen #05472A ΔE 0.076
- Mud Brown #60460F ΔE 0.076
Use #423A28 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.