#6B381C
Closest named color: Chestnut (#742802). oklch(40% 0.083 47.7), rgb(107, 56, 28).
Aa
White text reads best on this color (9.51:1).
About this color
#6B381C is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.083 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.037 away. White text reads best on it, at 9.51:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.083) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.20:1 |
| White text | 9.51:1 |
Values
| HEX | #6B381C |
| RGB | rgb(107, 56, 28) |
| HSL | hsl(21, 59%, 26%) |
| OKLCH | oklch(40% 0.083 47.7) |
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 #6B381C | 9.51:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #6B381C | 2.20:1 | Fails | Lc 12.3 | Not readable |
| #6B381C text on white | 9.51:1 | AAA | Lc 91.7 | Preferred for body text |
| #6B381C text on black | 2.20:1 | Fails | Lc -10.7 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F5E7E0
oklch(93.7% 0.018 48.5)
-
Step 200
200
#EDD3C6
oklch(88.5% 0.034 48.3)
-
Step 300
300
#E3B59E
oklch(80.8% 0.062 47.9)
-
Step 400
400
#D48D69
oklch(70.7% 0.1 47.5)
-
Step 500
500
#C66F3F
oklch(63% 0.127 48)
-
Step 600
600
#B2551B
oklch(55.6% 0.138 47.8)
-
Step 700
700
#99450C
oklch(49.2% 0.128 47.8)
-
Step 800
800
#7C390F
oklch(42.7% 0.106 47.8)
-
Step 900
900 (this color)
#6B381C
oklch(40% 0.083 47.7)
-
Step 950
950
#3B1E0E
oklch(27.1% 0.052 48.3)
#6B381C 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) | #463F19 | 0.073 |
| Deuteranopia (no green cones) | #524A1B | 0.067 |
| Tritanopia (no blue cones) | #752E32 | 0.048 |
| Achromatopsia (no color) | #464646 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B381C
#6B381C
oklch(40% 0.083 47.7)
- #004F68
#004F68
oklch(39.9% 0.078 227.7)
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 #6B381C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.037
- Purple Brown #673A3F ΔE 0.048
- Mud Brown #60460F ΔE 0.048
- Rust Brown #8B3103 ΔE 0.064
- Red Brown #8B2E16 ΔE 0.065
- Brownish Purple #76424E ΔE 0.073
- Milk Chocolate #7F4E1E ΔE 0.075
- Reddy Brown #6E1005 ΔE 0.075
Use #6B381C 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.