#42391C
Closest named color: Dark Olive (#373E02). oklch(34.7% 0.046 92.6), rgb(66, 57, 28).
Aa
White text reads best on this color (11.45:1).
About this color
#42391C is a dark, muted brown. In OKLCH its lightness is 35%, its chroma 0.046 and its hue 93°. 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 11.45:1.
| Hue family | Browns |
| Lightness | dark (35%) |
| Chroma | muted (0.046) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.83:1 |
| White text | 11.45:1 |
Values
| HEX | #42391C |
| RGB | rgb(66, 57, 28) |
| HSL | hsl(46, 40%, 18%) |
| OKLCH | oklch(34.7% 0.046 92.6) |
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 #42391C | 11.45:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #42391C | 1.83:1 | Fails | Lc 7.5 | Not readable |
| #42391C text on white | 11.45:1 | AAA | Lc 96.4 | Preferred for body text |
| #42391C text on black | 1.83:1 | 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
#F6F5F2
oklch(97% 0.004 91.4)
-
Step 100
100
#ECEAE2
oklch(93.6% 0.011 95.2)
-
Step 200
200
#DDD9CB
oklch(88.5% 0.019 93.7)
-
Step 300
300
#C8C0A8
oklch(80.8% 0.034 91.7)
-
Step 400
400
#ADA079
oklch(70.7% 0.056 91.8)
-
Step 500
500
#988957
oklch(63.2% 0.071 93.3)
-
Step 600
600
#83723B
oklch(55.6% 0.077 92.6)
-
Step 700
700
#6F602D
oklch(49.2% 0.072 93.2)
-
Step 800
800
#5A4E27
oklch(42.6% 0.059 92.7)
-
Step 900
900 (this color)
#42391C
oklch(34.7% 0.046 92.6)
-
Step 950
950
#2B2615
oklch(26.9% 0.03 93.6)
#42391C 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) | #3F381A | 0.007 |
| Deuteranopia (no green cones) | #413B1D | 0.006 |
| Tritanopia (no blue cones) | #473532 | 0.042 |
| Achromatopsia (no color) | #3A3A3A | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42391C
#42391C
oklch(34.7% 0.046 92.6)
- #313852
#313852
oklch(34.6% 0.047 272.2)
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 #42391C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.040
- Pakistan Green #283618 ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.056
- Onyx #343A40 ΔE 0.059
- Mud Brown #60460F ΔE 0.073
- Evergreen #05472A ΔE 0.074
- Pine Green #0A481E ΔE 0.077
- Forrest Green #154406 ΔE 0.079
Use #42391C 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.