#42371A
Closest named color: Dark Olive (#373E02). oklch(34.1% 0.047 89.1), rgb(66, 55, 26).
Aa
White text reads best on this color (11.71:1).
About this color
#42371A is a dark, muted brown. In OKLCH its lightness is 34%, its chroma 0.047 and its hue 89°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.043 away. White text reads best on it, at 11.71:1.
| Hue family | Browns |
| Lightness | dark (34%) |
| Chroma | muted (0.047) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.79:1 |
| White text | 11.71:1 |
Values
| HEX | #42371A |
| RGB | rgb(66, 55, 26) |
| HSL | hsl(44, 43%, 18%) |
| OKLCH | oklch(34.1% 0.047 89.1) |
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 #42371A | 11.71:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #42371A | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #42371A text on white | 11.71:1 | AAA | Lc 96.9 | Preferred for body text |
| #42371A text on black | 1.79:1 | 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
#F7F5F2
oklch(97.1% 0.005 78.3)
-
Step 100
100
#ECEAE2
oklch(93.6% 0.011 95.2)
-
Step 200
200
#DED9CB
oklch(88.5% 0.02 90.6)
-
Step 300
300
#CAC0A7
oklch(80.9% 0.036 88.8)
-
Step 400
400
#AF9F78
oklch(70.7% 0.057 88.3)
-
Step 500
500
#9B8856
oklch(63.2% 0.072 89.4)
-
Step 600
600
#86713A
oklch(55.6% 0.078 88.9)
-
Step 700
700
#715F2C
oklch(49.2% 0.073 90.1)
-
Step 800
800
#5C4D26
oklch(42.6% 0.06 88.7)
-
Step 900
900 (this color)
#42371A
oklch(34.1% 0.047 89.1)
-
Step 950
950
#2C2615
oklch(27% 0.03 90.8)
#42371A 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) | #3D3617 | 0.011 |
| Deuteranopia (no green cones) | #40391B | 0.007 |
| Tritanopia (no blue cones) | #473330 | 0.041 |
| Achromatopsia (no color) | #383838 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42371A
#42371A
oklch(34.1% 0.047 89.1)
- #2E3751
#2E3751
oklch(34.1% 0.048 269.2)
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 #42371A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.043
- Pakistan Green #283618 ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.059
- Onyx #343A40 ΔE 0.060
- Evergreen #05472A ΔE 0.077
- Mud Brown #60460F ΔE 0.078
- Gunmetal #293241 ΔE 0.081
- Pine Green #0A481E ΔE 0.081
Use #42371A 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.