#6B3B8E
Closest named color: Rebecca Purple (#663399). oklch(45% 0.137 308.6), rgb(107, 59, 142).
Aa
White text reads best on this color (7.95:1).
About this color
#6B3B8E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.137 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.029 away. White text reads best on it, at 7.95:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.64:1 |
| White text | 7.95:1 |
Values
| HEX | #6B3B8E |
| RGB | rgb(107, 59, 142) |
| HSL | hsl(275, 41%, 39%) |
| OKLCH | oklch(45% 0.137 308.6) |
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 #6B3B8E | 7.95:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #6B3B8E | 2.64:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #6B3B8E text on white | 7.95:1 | AAA | Lc 87.2 | Fine for body text |
| #6B3B8E text on black | 2.64:1 | Fails | Lc -14.9 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E1D2F0
oklch(88.5% 0.044 307.9)
-
Step 300
300
#CFB3E9
oklch(80.9% 0.08 308.2)
-
Step 400
400
#B78ADD
oklch(70.7% 0.127 308.4)
-
Step 500
500
#A66AD4
oklch(63.2% 0.163 308.6)
-
Step 600
600
#914EC1
oklch(55.6% 0.178 308.6)
-
Step 700
700
#7B3EA6
oklch(49% 0.165 308.5)
-
Step 800
800 (this color)
#6B3B8E
oklch(45% 0.137 308.6)
-
Step 900
900
#522F6C
oklch(37.8% 0.106 308.7)
-
Step 950
950
#301C3F
oklch(27% 0.067 309)
#6B3B8E 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) | #1E4F91 | 0.114 |
| Deuteranopia (no green cones) | #30528C | 0.103 |
| Tritanopia (no blue cones) | #664A5E | 0.097 |
| Achromatopsia (no color) | #515151 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B3B8E
#6B3B8E
oklch(45% 0.137 308.6)
- #416100
#416100
oklch(45% 0.119 128.5)
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 #6B3B8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.029
- Dark Slate Blue #483D8B ΔE 0.064
- Blueberry #464196 ΔE 0.067
- Light Eggplant #894585 ΔE 0.069
- Twilight #4E518B ΔE 0.071
- Warm Purple #952E8F ΔE 0.083
- Dusk #4E5481 ΔE 0.084
- Purple #800080 ΔE 0.085
Use #6B3B8E 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.