#42402C
Closest named color: Charcoal Grey (#3C4142). oklch(36.8% 0.032 103), rgb(66, 64, 44).
Aa
White text reads best on this color (10.49:1).
About this color
#42402C is a dark, muted brown. In OKLCH its lightness is 37%, its chroma 0.032 and its hue 103°. Its hue sits on the warm side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.035 away. White text reads best on it, at 10.49:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | muted (0.032) |
| Temperature | warm |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.00:1 |
| White text | 10.49:1 |
Values
| HEX | #42402C |
| RGB | rgb(66, 64, 44) |
| HSL | hsl(55, 20%, 22%) |
| OKLCH | oklch(36.8% 0.032 103) |
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 #42402C | 10.49:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #42402C | 2.00:1 | Fails | Lc 9.6 | Not readable |
| #42402C text on white | 10.49:1 | AAA | Lc 94.4 | Preferred for body text |
| #42402C text on black | 2.00:1 | Fails | Lc -8.2 | 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EAEAE5
oklch(93.6% 0.007 106.5)
-
Step 200
200
#DADAD0
oklch(88.6% 0.013 106.7)
-
Step 300
300
#C3C2B0
oklch(81% 0.025 104.3)
-
Step 400
400
#A5A286
oklch(70.7% 0.039 102.3)
-
Step 500
500
#8F8B68
oklch(63.1% 0.05 102.2)
-
Step 600
600
#797550
oklch(55.6% 0.054 102.7)
-
Step 700
700
#666240
oklch(49.1% 0.051 102.3)
-
Step 800
800
#535035
oklch(42.7% 0.042 102.6)
-
Step 900
900 (this color)
#42402C
oklch(36.8% 0.032 103)
-
Step 950
950
#28271B
oklch(27% 0.021 103.7)
#42402C 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) | #443F2B | 0.004 |
| Deuteranopia (no green cones) | #44402D | 0.004 |
| Tritanopia (no blue cones) | #453D3B | 0.030 |
| Achromatopsia (no color) | #3F3F3F | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42402C
#42402C
oklch(36.8% 0.032 103)
- #3C3D50
#3C3D50
oklch(36.7% 0.033 282.3)
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 #42402C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.035
- Onyx #343A40 ΔE 0.049
- Dark Olive #373E02 ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.062
- Pakistan Green #283618 ΔE 0.062
- Mud Brown #60460F ΔE 0.066
- Charcoal #264653 ΔE 0.068
- Evergreen #05472A ΔE 0.068
Use #42402C 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.