#423F29
Closest named color: Charcoal Grey (#3C4142). oklch(36.4% 0.035 101.4), rgb(66, 63, 41).
Aa
White text reads best on this color (10.63:1).
About this color
#423F29 is a dark, muted brown. In OKLCH its lightness is 36%, its chroma 0.035 and its hue 101°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.039 away. White text reads best on it, at 10.63:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | muted (0.035) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.97:1 |
| White text | 10.63:1 |
Values
| HEX | #423F29 |
| RGB | rgb(66, 63, 41) |
| HSL | hsl(53, 23%, 21%) |
| OKLCH | oklch(36.4% 0.035 101.4) |
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 #423F29 | 10.63:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #423F29 | 1.97:1 | Fails | Lc 9.2 | Not readable |
| #423F29 text on white | 10.63:1 | AAA | Lc 94.7 | Preferred for body text |
| #423F29 text on black | 1.97:1 | Fails | Lc -7.9 | 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
#DBDACF
oklch(88.6% 0.015 102.5)
-
Step 300
300
#C4C1AE
oklch(80.8% 0.026 99.6)
-
Step 400
400
#A6A284
oklch(70.8% 0.042 101.1)
-
Step 500
500
#908B65
oklch(63.1% 0.054 101.5)
-
Step 600
600
#7A754C
oklch(55.6% 0.059 102.1)
-
Step 700
700
#67623D
oklch(49.1% 0.055 101.5)
-
Step 800
800
#545032
oklch(42.7% 0.046 101.6)
-
Step 900
900 (this color)
#423F29
oklch(36.4% 0.035 101.4)
-
Step 950
950
#29271A
oklch(27.1% 0.023 100.4)
#423F29 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) | #433E27 | 0.004 |
| Deuteranopia (no green cones) | #443F2A | 0.004 |
| Tritanopia (no blue cones) | #463C39 | 0.032 |
| Achromatopsia (no color) | #3E3E3E | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423F29
#423F29
oklch(36.4% 0.035 101.4)
- #3B3C51
#3B3C51
oklch(36.4% 0.036 282.3)
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 #423F29, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.039
- Dark Olive #373E02 ΔE 0.049
- Onyx #343A40 ΔE 0.051
- Pakistan Green #283618 ΔE 0.059
- Mud Brown #60460F ΔE 0.066
- Dark Slate Gray #2F4F4F ΔE 0.066
- Evergreen #05472A ΔE 0.068
- Charcoal #264653 ΔE 0.071
Use #423F29 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.