#423D21
Closest named color: Dark Olive (#373E02). oklch(35.8% 0.044 99.4), rgb(66, 61, 33).
Aa
White text reads best on this color (10.93:1).
About this color
#423D21 is a dark, muted brown. In OKLCH its lightness is 36%, its chroma 0.044 and its hue 99°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.040 away. White text reads best on it, at 10.93:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | muted (0.044) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.92:1 |
| White text | 10.93:1 |
Values
| HEX | #423D21 |
| RGB | rgb(66, 61, 33) |
| HSL | hsl(51, 33%, 19%) |
| OKLCH | oklch(35.8% 0.044 99.4) |
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 #423D21 | 10.93:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #423D21 | 1.92:1 | Fails | Lc 8.6 | Not readable |
| #423D21 text on white | 10.93:1 | AAA | Lc 95.3 | Preferred for body text |
| #423D21 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
#F6F5F2
oklch(97% 0.004 91.4)
-
Step 100
100
#EBEAE3
oklch(93.6% 0.009 100)
-
Step 200
200
#DCDACC
oklch(88.6% 0.019 100.2)
-
Step 300
300
#C5C1A9
oklch(80.8% 0.033 99.3)
-
Step 400
400
#A8A27C
oklch(70.7% 0.053 100.1)
-
Step 500
500
#938B5A
oklch(63.2% 0.068 100.1)
-
Step 600
600
#7E743F
oklch(55.6% 0.074 98.9)
-
Step 700
700
#6A6131
oklch(49% 0.068 98.9)
-
Step 800
800
#56502A
oklch(42.8% 0.056 100.5)
-
Step 900
900 (this color)
#423D21
oklch(35.8% 0.044 99.4)
-
Step 950
950
#2A2717
oklch(27.1% 0.028 98.9)
#423D21 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) | #423B1F | 0.006 |
| Deuteranopia (no green cones) | #433D22 | 0.002 |
| Tritanopia (no blue cones) | #463936 | 0.040 |
| Achromatopsia (no color) | #3D3D3D | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423D21
#423D21
oklch(35.8% 0.044 99.4)
- #373A53
#373A53
oklch(35.7% 0.044 278.7)
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 #423D21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.049
- Pakistan Green #283618 ΔE 0.053
- Onyx #343A40 ΔE 0.057
- Mud Brown #60460F ΔE 0.066
- Evergreen #05472A ΔE 0.068
- Pine Green #0A481E ΔE 0.072
- Green Brown #544E03 ΔE 0.073
Use #423D21 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.