#3F442E
Closest named color: Charcoal Grey (#3C4142). oklch(37.5% 0.036 118.6), rgb(63, 68, 46).
Aa
White text reads best on this color (10.10:1).
About this color
#3F442E is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.036 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.037 away. White text reads best on it, at 10.10:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.036) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.07:1 |
| White text | 10.10:1 |
Values
| HEX | #3F442E |
| RGB | rgb(63, 68, 46) |
| HSL | hsl(74, 19%, 22%) |
| OKLCH | oklch(37.5% 0.036 118.6) |
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 #3F442E | 10.10:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #3F442E | 2.07:1 | Fails | Lc 10.5 | Not readable |
| #3F442E text on white | 10.10:1 | AAA | Lc 93.5 | Preferred for body text |
| #3F442E text on black | 2.07:1 | Fails | Lc -9.0 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE5
oklch(93.7% 0.008 121.6)
-
Step 200
200
#D8DBD0
oklch(88.6% 0.015 119.1)
-
Step 300
300
#BEC3B0
oklch(80.8% 0.027 119)
-
Step 400
400
#9DA586
oklch(70.7% 0.045 119.3)
-
Step 500
500
#868F68
oklch(63.2% 0.057 118.6)
-
Step 600
600
#6F7950
oklch(55.7% 0.061 119.6)
-
Step 700
700
#5D6540
oklch(49% 0.056 118.5)
-
Step 800
800
#4C5335
oklch(42.8% 0.047 119.1)
-
Step 900
900 (this color)
#3F442E
oklch(37.5% 0.036 118.6)
-
Step 950
950
#25281B
oklch(26.9% 0.023 118.6)
#3F442E 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) | #47422D | 0.014 |
| Deuteranopia (no green cones) | #46422F | 0.013 |
| Tritanopia (no blue cones) | #41423E | 0.029 |
| Achromatopsia (no color) | #424242 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F442E
#3F442E
oklch(37.5% 0.036 118.6)
- #433D52
#433D52
oklch(37.5% 0.036 297.7)
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 #3F442E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.037
- Dark Olive #373E02 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.054
- Onyx #343A40 ΔE 0.055
- Evergreen #05472A ΔE 0.061
- Mud Brown #60460F ΔE 0.064
- Charcoal #264653 ΔE 0.065
- Dark Blue Green #005249 ΔE 0.066
Use #3F442E 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.