#6B339E
Closest named color: Rebecca Purple (#663399). oklch(45% 0.167 304.5), rgb(107, 51, 158).
Aa
White text reads best on this color (8.10:1).
About this color
#6B339E is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.167 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.012 away. White text reads best on it, at 8.10:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.167) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.59:1 |
| White text | 8.10:1 |
Values
| HEX | #6B339E |
| RGB | rgb(107, 51, 158) |
| HSL | hsl(271, 51%, 41%) |
| OKLCH | oklch(45% 0.167 304.5) |
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 #6B339E | 8.10:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #6B339E | 2.59:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #6B339E text on white | 8.10:1 | AAA | Lc 87.4 | Fine for body text |
| #6B339E text on black | 2.59:1 | Fails | Lc -14.7 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EEE6FA
oklch(93.7% 0.028 303.9)
-
Step 200
200
#E1D1F7
oklch(88.6% 0.054 304.4)
-
Step 300
300
#CFB1F4
oklch(80.9% 0.098 304.8)
-
Step 400
400
#B785EE
oklch(70.7% 0.156 304.7)
-
Step 500
500
#A561E9
oklch(63% 0.201 304.3)
-
Step 600
600
#9142D7
oklch(55.6% 0.218 304.4)
-
Step 700
700
#7C32BA
oklch(49.1% 0.202 304.7)
-
Step 800
800 (this color)
#6B339E
oklch(45% 0.167 304.5)
-
Step 900
900
#522978
oklch(37.7% 0.131 304.8)
-
Step 950
950
#301946
oklch(27% 0.083 305.1)
#6B339E 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) | #004EA1 | 0.131 |
| Deuteranopia (no green cones) | #0E509C | 0.129 |
| Tritanopia (no blue cones) | #624B64 | 0.122 |
| Achromatopsia (no color) | #505050 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B339E
#6B339E
oklch(45% 0.167 304.5)
- #485F00
#485F00
oklch(45% 0.112 124.4)
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 #6B339E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.012
- Grape #7209B7 ΔE 0.061
- Blueberry #464196 ΔE 0.071
- Dark Slate Blue #483D8B ΔE 0.072
- Bluey Purple #6241C7 ΔE 0.073
- Chrysanthemum #560BAD ΔE 0.076
- Blue With A Hint Of Purple #533CC6 ΔE 0.080
- Purple #800080 ΔE 0.084
Use #6B339E 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.