#6B373F
Closest named color: Purple Brown (#673A3F). oklch(40.5% 0.074 11.1), rgb(107, 55, 63).
Aa
White text reads best on this color (9.36:1).
About this color
#6B373F is a dark, moderately saturated red. In OKLCH its lightness is 41%, its chroma 0.074 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.010 away. White text reads best on it, at 9.36:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.074) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.24:1 |
| White text | 9.36:1 |
Values
| HEX | #6B373F |
| RGB | rgb(107, 55, 63) |
| HSL | hsl(351, 32%, 32%) |
| OKLCH | oklch(40.5% 0.074 11.1) |
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 #6B373F | 9.36:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #6B373F | 2.24:1 | Fails | Lc 12.6 | Not readable |
| #6B373F text on white | 9.36:1 | AAA | Lc 91.4 | Preferred for body text |
| #6B373F text on black | 2.24:1 | Fails | Lc -11.0 | 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 800.
-
Step 50
50
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F2E7E8
oklch(93.7% 0.012 11)
-
Step 200
200
#E8D3D5
oklch(88.5% 0.023 11)
-
Step 300
300
#DBB6BA
oklch(81% 0.043 10.7)
-
Step 400
400
#C88F96
oklch(70.7% 0.07 10.9)
-
Step 500
500
#B8737C
oklch(63.2% 0.088 11.4)
-
Step 600
600
#A35A65
oklch(55.5% 0.096 11.1)
-
Step 700
700
#8C4A54
oklch(49.2% 0.09 11.3)
-
Step 800
800 (this color)
#6B373F
oklch(40.5% 0.074 11.1)
-
Step 900
900
#5C343A
oklch(37.7% 0.058 10.6)
-
Step 950
950
#361F22
oklch(27% 0.036 11.3)
#6B373F 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) | #41403F | 0.080 |
| Deuteranopia (no green cones) | #4E4A3E | 0.074 |
| Tritanopia (no blue cones) | #73323A | 0.019 |
| Achromatopsia (no color) | #474747 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B373F
#6B373F
oklch(40.5% 0.074 11.1)
- #005552
#005552
oklch(40.6% 0.07 190.6)
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 #6B373F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.010
- Brownish Purple #76424E ΔE 0.041
- Chestnut #742802 ΔE 0.067
- Red Brown #8B2E16 ΔE 0.077
- Wine Red #7B0323 ΔE 0.080
- Bordeaux #7B002C ΔE 0.082
- Rust Brown #8B3103 ΔE 0.085
- Wine #80013F ΔE 0.086
Use #6B373F 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.