#42391B
Closest named color: Dark Olive (#373E02). oklch(34.6% 0.047 93.1), rgb(66, 57, 27).
Aa
White text reads best on this color (11.45:1).
About this color
#42391B is a dark, muted brown. In OKLCH its lightness is 35%, its chroma 0.047 and its hue 93°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.039 away. White text reads best on it, at 11.45:1.
| Hue family | Browns |
| Lightness | dark (35%) |
| Chroma | muted (0.047) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.83:1 |
| White text | 11.45:1 |
Values
| HEX | #42391B |
| RGB | rgb(66, 57, 27) |
| HSL | hsl(46, 42%, 18%) |
| OKLCH | oklch(34.6% 0.047 93.1) |
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 #42391B | 11.45:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #42391B | 1.83:1 | Fails | Lc 7.5 | Not readable |
| #42391B text on white | 11.45:1 | AAA | Lc 96.4 | Preferred for body text |
| #42391B 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
#C8C1A7
oklch(81% 0.036 94.6)
-
Step 400
400
#ADA078
oklch(70.7% 0.057 92.2)
-
Step 500
500
#988955
oklch(63.1% 0.073 93.9)
-
Step 600
600
#837239
oklch(55.5% 0.079 93.1)
-
Step 700
700
#6F602C
oklch(49.2% 0.073 93.5)
-
Step 800
800
#5A4E25
oklch(42.6% 0.061 93.4)
-
Step 900
900 (this color)
#42391B
oklch(34.6% 0.047 93.1)
-
Step 950
950
#2B2615
oklch(26.9% 0.03 93.6)
#42391B 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) | #3F3818 | 0.008 |
| Deuteranopia (no green cones) | #413B1C | 0.006 |
| Tritanopia (no blue cones) | #473532 | 0.043 |
| Achromatopsia (no color) | #3A3A3A | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42391B
#42391B
oklch(34.6% 0.047 93.1)
- #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 #42391B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.039
- Pakistan Green #283618 ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.057
- Onyx #343A40 ΔE 0.060
- Mud Brown #60460F ΔE 0.073
- Evergreen #05472A ΔE 0.073
- Pine Green #0A481E ΔE 0.077
- Forrest Green #154406 ΔE 0.078
Use #42391B 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.