#6B3333
Closest named color: Purple Brown (#673A3F). oklch(39.5% 0.08 21.4), rgb(107, 51, 51).
Aa
White text reads best on this color (9.78:1).
About this color
#6B3333 is a dark, moderately saturated red. In OKLCH its lightness is 40%, its chroma 0.080 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.022 away. White text reads best on it, at 9.78:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.14:1 |
| White text | 9.78:1 |
Values
| HEX | #6B3333 |
| RGB | rgb(107, 51, 51) |
| HSL | hsl(0, 35%, 31%) |
| OKLCH | oklch(39.5% 0.08 21.4) |
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 #6B3333 | 9.78:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #6B3333 | 2.14:1 | Fails | Lc 11.6 | Not readable |
| #6B3333 text on white | 9.78:1 | AAA | Lc 92.3 | Preferred for body text |
| #6B3333 text on black | 2.14:1 | Fails | Lc -10.1 | 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
#FBF3F3
oklch(97% 0.009 17.3)
-
Step 100
100
#F5E6E5
oklch(93.7% 0.016 22.1)
-
Step 200
200
#EFD1CF
oklch(88.5% 0.034 22.4)
-
Step 300
300
#E5B2B0
oklch(80.9% 0.06 21.1)
-
Step 400
400
#D68886
oklch(70.7% 0.096 21.4)
-
Step 500
500
#C96868
oklch(63% 0.124 21.2)
-
Step 600
600
#B44E50
oklch(55.6% 0.133 21.2)
-
Step 700
700
#9B3E40
oklch(49.1% 0.125 21.6)
-
Step 800
800
#7E3435
oklch(42.7% 0.103 21.7)
-
Step 900
900 (this color)
#6B3333
oklch(39.5% 0.08 21.4)
-
Step 950
950
#3C1B1B
oklch(26.9% 0.052 21.1)
#6B3333 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) | #3F3D33 | 0.086 |
| Deuteranopia (no green cones) | #4D4832 | 0.079 |
| Tritanopia (no blue cones) | #742B33 | 0.024 |
| Achromatopsia (no color) | #444444 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B3333
#6B3333
oklch(39.5% 0.08 21.4)
- #005155
#005155
oklch(39.5% 0.067 200.6)
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 #6B3333, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.022
- Chestnut #742802 ΔE 0.050
- Brownish Purple #76424E ΔE 0.055
- Reddy Brown #6E1005 ΔE 0.070
- Red Brown #8B2E16 ΔE 0.070
- Wine Red #7B0323 ΔE 0.071
- Bordeaux #7B002C ΔE 0.075
- Rust Brown #8B3103 ΔE 0.077
Use #6B3333 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.