#6B3750
Closest named color: Purple Brown (#673A3F). oklch(41.1% 0.081 351), rgb(107, 55, 80).
Aa
White text reads best on this color (9.18:1).
About this color
#6B3750 is a dark, moderately saturated red. In OKLCH its lightness is 41%, its chroma 0.081 and its hue 351°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.033 away. White text reads best on it, at 9.18:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #6B3750 |
| RGB | rgb(107, 55, 80) |
| HSL | hsl(331, 32%, 32%) |
| OKLCH | oklch(41.1% 0.081 351) |
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 #6B3750 | 9.18:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #6B3750 | 2.28:1 | Fails | Lc 13.1 | Not readable |
| #6B3750 text on white | 9.18:1 | AAA | Lc 90.9 | Preferred for body text |
| #6B3750 text on black | 2.28:1 | Fails | Lc -11.4 | 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
#F2E6EB
oklch(93.6% 0.015 350.1)
-
Step 200
200
#E8D2DB
oklch(88.4% 0.027 350.9)
-
Step 300
300
#DAB5C4
oklch(81% 0.047 351.9)
-
Step 400
400
#C68DA6
oklch(70.6% 0.076 351.2)
-
Step 500
500
#B67191
oklch(63.2% 0.096 350.9)
-
Step 600
600
#A1587B
oklch(55.6% 0.105 350.9)
-
Step 700
700
#894867
oklch(49.1% 0.096 351.3)
-
Step 800
800 (this color)
#6B3750
oklch(41.1% 0.081 351)
-
Step 900
900
#5B3346
oklch(37.7% 0.063 350.7)
-
Step 950
950
#351E29
oklch(26.9% 0.04 350)
#6B3750 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) | #3D4251 | 0.086 |
| Deuteranopia (no green cones) | #4A4B4F | 0.079 |
| Tritanopia (no blue cones) | #723540 | 0.029 |
| Achromatopsia (no color) | #484848 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B3750
#6B3750
oklch(41.1% 0.081 351)
- #005845
#005845
oklch(41% 0.08 171.6)
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 #6B3750, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.033
- Brownish Purple #76424E ΔE 0.040
- Red Purple #820747 ΔE 0.079
- Velvet #750851 ΔE 0.080
- Wine #80013F ΔE 0.082
- Dark Mauve #874C62 ΔE 0.082
- Merlot #730039 ΔE 0.085
- Bordeaux #7B002C ΔE 0.087
Use #6B3750 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.