#6B3757
Closest named color: Purple Brown (#673A3F). oklch(41.4% 0.085 343.8), rgb(107, 55, 87).
Aa
White text reads best on this color (9.09:1).
About this color
#6B3757 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.085 and its hue 344°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.044 away. White text reads best on it, at 9.09:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #6B3757 |
| RGB | rgb(107, 55, 87) |
| HSL | hsl(323, 32%, 32%) |
| OKLCH | oklch(41.4% 0.085 343.8) |
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 #6B3757 | 9.09:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #6B3757 | 2.30:1 | Fails | Lc 13.3 | Not readable |
| #6B3757 text on white | 9.09:1 | AAA | Lc 90.6 | Preferred for body text |
| #6B3757 text on black | 2.30:1 | Fails | Lc -11.7 | 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 800.
-
Step 50
50
#F9F4F6
oklch(97.2% 0.006 350.8)
-
Step 100
100
#F1E6EC
oklch(93.5% 0.014 343.2)
-
Step 200
200
#E7D2DE
oklch(88.4% 0.028 342.3)
-
Step 300
300
#D9B4C9
oklch(80.9% 0.051 343.2)
-
Step 400
400
#C58DAD
oklch(70.8% 0.08 344.1)
-
Step 500
500
#B57099
oklch(63.2% 0.102 343.9)
-
Step 600
600
#A05783
oklch(55.6% 0.111 344.3)
-
Step 700
700
#88476F
oklch(49.1% 0.102 343.8)
-
Step 800
800 (this color)
#6B3757
oklch(41.4% 0.085 343.8)
-
Step 900
900
#5A334A
oklch(37.8% 0.065 344.4)
-
Step 950
950
#351E2C
oklch(27.1% 0.042 343.1)
#6B3757 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) | #3B4358 | 0.089 |
| Deuteranopia (no green cones) | #484C56 | 0.083 |
| Tritanopia (no blue cones) | #713743 | 0.036 |
| Achromatopsia (no color) | #484848 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B3757
#6B3757
oklch(41.4% 0.085 343.8)
- #085A3F
#085A3F
oklch(41.5% 0.085 163.9)
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 #6B3757, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.044
- Brownish Purple #76424E ΔE 0.045
- Velvet #750851 ΔE 0.077
- Red Purple #820747 ΔE 0.079
- Dark Mauve #874C62 ΔE 0.081
- Wine #80013F ΔE 0.083
- Grape Purple #5D1451 ΔE 0.085
- Rich Purple #720058 ΔE 0.086
Use #6B3757 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.