#6B3370
Closest named color: Rebecca Purple (#663399). oklch(42% 0.116 324.2), rgb(107, 51, 112).
Aa
White text reads best on this color (9.00:1).
About this color
#6B3370 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.116 and its hue 324°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.069 away. White text reads best on it, at 9.00:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.33:1 |
| White text | 9.00:1 |
Values
| HEX | #6B3370 |
| RGB | rgb(107, 51, 112) |
| HSL | hsl(295, 37%, 32%) |
| OKLCH | oklch(42% 0.116 324.2) |
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 #6B3370 | 9.00:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #6B3370 | 2.33:1 | Fails | Lc 13.7 | Not readable |
| #6B3370 text on white | 9.00:1 | AAA | Lc 90.3 | Preferred for body text |
| #6B3370 text on black | 2.33:1 | Fails | Lc -12.0 | 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
#F9F3F9
oklch(97% 0.01 325.7)
-
Step 100
100
#F1E6F1
oklch(93.7% 0.019 325.7)
-
Step 200
200
#E6D1E7
oklch(88.4% 0.037 324.5)
-
Step 300
300
#D7B2DA
oklch(80.9% 0.069 323.8)
-
Step 400
400
#C289C7
oklch(70.7% 0.108 323.9)
-
Step 500
500
#B26AB8
oklch(63.1% 0.138 324.3)
-
Step 600
600
#9D4FA4
oklch(55.5% 0.151 324.2)
-
Step 700
700
#86408D
oklch(49.2% 0.14 323.9)
-
Step 800
800 (this color)
#6B3370
oklch(42% 0.116 324.2)
-
Step 900
900
#592F5C
oklch(37.8% 0.09 324.7)
-
Step 950
950
#341C36
oklch(27% 0.057 324.2)
#6B3370 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) | #2B4572 | 0.112 |
| Deuteranopia (no green cones) | #3C4B6E | 0.099 |
| Tritanopia (no blue cones) | #6D3B4C | 0.070 |
| Achromatopsia (no color) | #494949 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B3370
#6B3370
oklch(42% 0.116 324.2)
- #195C1E
#195C1E
oklch(41.9% 0.116 144.2)
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 #6B3370, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.069
- Velvet #750851 ΔE 0.077
- Rich Purple #720058 ΔE 0.077
- Purple #800080 ΔE 0.078
- Dark Slate Blue #483D8B ΔE 0.079
- Light Eggplant #894585 ΔE 0.080
- Brownish Purple #76424E ΔE 0.082
- Grape Purple #5D1451 ΔE 0.083
Use #6B3370 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.