#3F4028
Closest named color: Charcoal Grey (#3C4142). oklch(36.4% 0.038 110.2), rgb(63, 64, 40).
Aa
White text reads best on this color (10.63:1).
About this color
#3F4028 is a dark, muted brown. In OKLCH its lightness is 36%, its chroma 0.038 and its hue 110°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.041 away. White text reads best on it, at 10.63:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | muted (0.038) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.97:1 |
| White text | 10.63:1 |
Values
| HEX | #3F4028 |
| RGB | rgb(63, 64, 40) |
| HSL | hsl(62, 23%, 20%) |
| OKLCH | oklch(36.4% 0.038 110.2) |
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 #3F4028 | 10.63:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #3F4028 | 1.97:1 | Fails | Lc 9.3 | Not readable |
| #3F4028 text on white | 10.63:1 | AAA | Lc 94.7 | Preferred for body text |
| #3F4028 text on black | 1.97:1 | Fails | Lc -7.9 | 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
#EAEAE4
oklch(93.5% 0.008 106.6)
-
Step 200
200
#D9DACE
oklch(88.4% 0.016 110.6)
-
Step 300
300
#C1C3AE
oklch(81% 0.029 111.5)
-
Step 400
400
#A2A483
oklch(70.8% 0.046 110.4)
-
Step 500
500
#8B8D63
oklch(63.1% 0.059 110.3)
-
Step 600
600
#75774A
oklch(55.6% 0.064 110.5)
-
Step 700
700
#62643B
oklch(49.1% 0.06 110.8)
-
Step 800
800
#505231
oklch(42.8% 0.05 111.3)
-
Step 900
900 (this color)
#3F4028
oklch(36.4% 0.038 110.2)
-
Step 950
950
#27281A
oklch(27.1% 0.025 111.3)
#3F4028 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) | #443E26 | 0.010 |
| Deuteranopia (no green cones) | #443F29 | 0.009 |
| Tritanopia (no blue cones) | #423D3A | 0.035 |
| Achromatopsia (no color) | #3E3E3E | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4028
#3F4028
oklch(36.4% 0.038 110.2)
- #3E3B51
#3E3B51
oklch(36.5% 0.038 290.7)
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 #3F4028, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.041
- Dark Olive #373E02 ΔE 0.044
- Onyx #343A40 ΔE 0.053
- Pakistan Green #283618 ΔE 0.056
- Evergreen #05472A ΔE 0.062
- Dark Slate Gray #2F4F4F ΔE 0.065
- Mud Brown #60460F ΔE 0.068
- Pine Green #0A481E ΔE 0.068
Use #3F4028 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.