#6B331B
Closest named color: Chestnut (#742802). oklch(39.1% 0.088 42.7), rgb(107, 51, 27).
Aa
White text reads best on this color (9.93:1).
About this color
#6B331B is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.088 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.028 away. White text reads best on it, at 9.93:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.088) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.11:1 |
| White text | 9.93:1 |
Values
| HEX | #6B331B |
| RGB | rgb(107, 51, 27) |
| HSL | hsl(18, 60%, 26%) |
| OKLCH | oklch(39.1% 0.088 42.7) |
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 #6B331B | 9.93:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #6B331B | 2.11:1 | Fails | Lc 11.3 | Not readable |
| #6B331B text on white | 9.93:1 | AAA | Lc 92.6 | Preferred for body text |
| #6B331B text on black | 2.11:1 | Fails | Lc -9.8 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#EFD2C6
oklch(88.5% 0.037 43.8)
-
Step 300
300
#E6B39F
oklch(80.8% 0.066 42.4)
-
Step 400
400
#D88A6B
oklch(70.7% 0.105 42.4)
-
Step 500
500
#CB6B42
oklch(63.1% 0.134 42.9)
-
Step 600
600
#B75020
oklch(55.7% 0.146 42.7)
-
Step 700
700
#9D4011
oklch(49.1% 0.136 42.9)
-
Step 800
800
#803513
oklch(42.7% 0.113 42.2)
-
Step 900
900 (this color)
#6B331B
oklch(39.1% 0.088 42.7)
-
Step 950
950
#3D1C0F
oklch(27% 0.056 41.6)
#6B331B 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) | #423B18 | 0.082 |
| Deuteranopia (no green cones) | #50481A | 0.076 |
| Tritanopia (no blue cones) | #76282E | 0.046 |
| Achromatopsia (no color) | #434343 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B331B
#6B331B
oklch(39.1% 0.088 42.7)
- #004D61
#004D61
oklch(39% 0.072 222.8)
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 #6B331B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.028
- Purple Brown #673A3F ΔE 0.047
- Mud Brown #60460F ΔE 0.060
- Reddy Brown #6E1005 ΔE 0.063
- Red Brown #8B2E16 ΔE 0.065
- Rust Brown #8B3103 ΔE 0.066
- Blood #770001 ΔE 0.073
- Maroon #800000 ΔE 0.074
Use #6B331B 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.