#423121
Closest named color: Onyx (#343A40). oklch(32.8% 0.036 64.3), rgb(66, 49, 33).
Aa
White text reads best on this color (12.40:1).
About this color
#423121 is a dark, muted brown. In OKLCH its lightness is 33%, its chroma 0.036 and its hue 64°. Its hue sits on the warm side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.052 away. White text reads best on it, at 12.40:1.
| Hue family | Browns |
| Lightness | dark (33%) |
| Chroma | muted (0.036) |
| Temperature | warm |
| Nearest name | Onyx (#343A40) |
| Black text | 1.69:1 |
| White text | 12.40:1 |
Values
| HEX | #423121 |
| RGB | rgb(66, 49, 33) |
| HSL | hsl(29, 33%, 19%) |
| OKLCH | oklch(32.8% 0.036 64.3) |
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 #423121 | 12.40:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #423121 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #423121 text on white | 12.40:1 | AAA | Lc 98.2 | Preferred for body text |
| #423121 text on black | 1.69:1 | 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
#F7F5F3
oklch(97.1% 0.003 67.8)
-
Step 100
100
#EEE9E5
oklch(93.7% 0.008 61.4)
-
Step 200
200
#E0D7CF
oklch(88.4% 0.015 64.3)
-
Step 300
300
#CDBDAF
oklch(80.8% 0.027 63.7)
-
Step 400
400
#B49B85
oklch(70.6% 0.043 63.4)
-
Step 500
500
#A28366
oklch(63.2% 0.056 64.6)
-
Step 600
600
#8C6C4E
oklch(55.6% 0.059 64.3)
-
Step 700
700
#775A3F
oklch(49.1% 0.055 63.9)
-
Step 800
800
#614A34
oklch(42.8% 0.046 64.8)
-
Step 900
900 (this color)
#423121
oklch(32.8% 0.036 64.3)
-
Step 950
950
#2E241B
oklch(26.9% 0.022 63.7)
#423121 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) | #363220 | 0.023 |
| Deuteranopia (no green cones) | #3A3621 | 0.021 |
| Tritanopia (no blue cones) | #472D2D | 0.029 |
| Achromatopsia (no color) | #343434 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423121
#423121
oklch(32.8% 0.036 64.3)
- #253746
#253746
oklch(32.8% 0.036 244.3)
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 #423121, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.052
- Pakistan Green #283618 ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.060
- Dark Olive #373E02 ΔE 0.065
- Gunmetal #293241 ΔE 0.066
- Chocolate Brown #411900 ΔE 0.070
- Space Cadet #2B2D42 ΔE 0.074
- Dark Brown #341C02 ΔE 0.077
Use #423121 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.