#6B331F
Closest named color: Chestnut (#742802). oklch(39.1% 0.086 39.9), rgb(107, 51, 31).
Aa
White text reads best on this color (9.91:1).
About this color
#6B331F is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.086 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.030 away. White text reads best on it, at 9.91:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #6B331F |
| RGB | rgb(107, 51, 31) |
| HSL | hsl(16, 55%, 27%) |
| OKLCH | oklch(39.1% 0.086 39.9) |
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 #6B331F | 9.91:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #6B331F | 2.11:1 | Fails | Lc 11.3 | Not readable |
| #6B331F text on white | 9.91:1 | AAA | Lc 92.6 | Preferred for body text |
| #6B331F 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
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#EFD2C8
oklch(88.5% 0.035 40)
-
Step 300
300
#E6B3A2
oklch(80.9% 0.064 39.2)
-
Step 400
400
#D88A6F
oklch(70.8% 0.104 39.8)
-
Step 500
500
#CB6A48
oklch(63% 0.132 39.8)
-
Step 600
600
#B65029
oklch(55.6% 0.143 40.3)
-
Step 700
700
#9D401C
oklch(49.2% 0.133 40)
-
Step 800
800
#7F3519
oklch(42.6% 0.11 40.1)
-
Step 900
900 (this color)
#6B331F
oklch(39.1% 0.086 39.9)
-
Step 950
950
#3C1C11
oklch(26.9% 0.054 39.5)
#6B331F 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) | #423B1D | 0.082 |
| Deuteranopia (no green cones) | #50481E | 0.076 |
| Tritanopia (no blue cones) | #76282E | 0.042 |
| Achromatopsia (no color) | #434343 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B331F
#6B331F
oklch(39.1% 0.086 39.9)
- #004E60
#004E60
oklch(39.2% 0.071 220.1)
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 #6B331F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.030
- Purple Brown #673A3F ΔE 0.043
- Mud Brown #60460F ΔE 0.062
- Reddy Brown #6E1005 ΔE 0.063
- Red Brown #8B2E16 ΔE 0.065
- Rust Brown #8B3103 ΔE 0.067
- Blood #770001 ΔE 0.073
- Brownish Purple #76424E ΔE 0.073
Use #6B331F 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.