#423F24
Closest named color: Dark Olive (#373E02). oklch(36.3% 0.043 102.8), rgb(66, 63, 36).
Aa
White text reads best on this color (10.67:1).
About this color
#423F24 is a dark, muted brown. In OKLCH its lightness is 36%, its chroma 0.043 and its hue 103°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.042 away. White text reads best on it, at 10.67:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | muted (0.043) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.96:1 |
| White text | 10.67:1 |
Values
| HEX | #423F24 |
| RGB | rgb(66, 63, 36) |
| HSL | hsl(54, 29%, 20%) |
| OKLCH | oklch(36.3% 0.043 102.8) |
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 #423F24 | 10.67:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #423F24 | 1.96:1 | Fails | Lc 9.2 | Not readable |
| #423F24 text on white | 10.67:1 | AAA | Lc 94.7 | Preferred for body text |
| #423F24 text on black | 1.96:1 | 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
#F6F6F2
oklch(97.2% 0.005 106.5)
-
Step 100
100
#EBEAE3
oklch(93.6% 0.009 100)
-
Step 200
200
#DBDACD
oklch(88.6% 0.018 103.2)
-
Step 300
300
#C4C2AB
oklch(80.9% 0.032 103)
-
Step 400
400
#A6A27E
oklch(70.6% 0.05 102.3)
-
Step 500
500
#918B5D
oklch(63% 0.064 101.7)
-
Step 600
600
#7B7542
oklch(55.6% 0.071 102.5)
-
Step 700
700
#686234
oklch(49.1% 0.066 101.9)
-
Step 800
800
#54502C
oklch(42.6% 0.054 102.9)
-
Step 900
900 (this color)
#423F24
oklch(36.3% 0.043 102.8)
-
Step 950
950
#292717
oklch(27% 0.028 102)
#423F24 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) | #443D22 | 0.007 |
| Deuteranopia (no green cones) | #453F25 | 0.006 |
| Tritanopia (no blue cones) | #463C38 | 0.037 |
| Achromatopsia (no color) | #3E3E3E | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423F24
#423F24
oklch(36.3% 0.043 102.8)
- #3A3B54
#3A3B54
oklch(36.2% 0.043 282.2)
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 #423F24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.046
- Pakistan Green #283618 ΔE 0.057
- Onyx #343A40 ΔE 0.057
- Mud Brown #60460F ΔE 0.064
- Evergreen #05472A ΔE 0.066
- Green Brown #544E03 ΔE 0.069
- Dark Slate Gray #2F4F4F ΔE 0.071
Use #423F24 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.