#6B3997
Closest named color: Rebecca Purple (#663399). oklch(45.3% 0.15 305.7), rgb(107, 57, 151).
Aa
White text reads best on this color (7.90:1).
About this color
#6B3997 is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.150 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.018 away. White text reads best on it, at 7.90:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #6B3997 |
| RGB | rgb(107, 57, 151) |
| HSL | hsl(272, 45%, 41%) |
| OKLCH | oklch(45.3% 0.15 305.7) |
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 #6B3997 | 7.90:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #6B3997 | 2.65:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #6B3997 text on white | 7.90:1 | AAA | Lc 87.0 | Fine for body text |
| #6B3997 text on black | 2.65:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EEE6F8
oklch(93.6% 0.025 305.8)
-
Step 200
200
#E1D1F3
oklch(88.4% 0.049 306.6)
-
Step 300
300
#CEB2EE
oklch(80.8% 0.088 305.8)
-
Step 400
400
#B688E6
oklch(70.7% 0.141 305.6)
-
Step 500
500
#A467DE
oklch(63.1% 0.179 305.5)
-
Step 600
600
#904ACC
oklch(55.6% 0.196 305.7)
-
Step 700
700
#7A3AB0
oklch(49% 0.181 305.6)
-
Step 800
800 (this color)
#6B3997
oklch(45.3% 0.15 305.7)
-
Step 900
900
#512D72
oklch(37.8% 0.117 305.6)
-
Step 950
950
#2F1B43
oklch(27% 0.074 305)
#6B3997 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) | #07509A | 0.126 |
| Deuteranopia (no green cones) | #255295 | 0.113 |
| Tritanopia (no blue cones) | #644C62 | 0.109 |
| Achromatopsia (no color) | #515151 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B3997
#6B3997
oklch(45.3% 0.15 305.7)
- #476100
#476100
oklch(45.5% 0.115 125.7)
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 #6B3997, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.018
- Dark Slate Blue #483D8B ΔE 0.066
- Blueberry #464196 ΔE 0.066
- Light Eggplant #894585 ΔE 0.077
- Grape #7209B7 ΔE 0.078
- Twilight #4E518B ΔE 0.078
- Bluey Purple #6241C7 ΔE 0.080
- Warm Purple #952E8F ΔE 0.084
Use #6B3997 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.