#6B37AC
Closest named color: Rebecca Purple (#663399). oklch(46.6% 0.178 299.9), rgb(107, 55, 172).
Aa
White text reads best on this color (7.58:1).
About this color
#6B37AC is a medium-dark, vivid purple. In OKLCH its lightness is 47%, its chroma 0.178 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.033 away. White text reads best on it, at 7.58:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.178) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #6B37AC |
| RGB | rgb(107, 55, 172) |
| HSL | hsl(267, 52%, 45%) |
| OKLCH | oklch(46.6% 0.178 299.9) |
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 #6B37AC | 7.58:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #6B37AC | 2.76:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #6B37AC text on white | 7.58:1 | AAA | Lc 85.8 | Fine for body text |
| #6B37AC text on black | 2.76:1 | Fails | Lc -16.3 | 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 700.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#ECE6F9
oklch(93.5% 0.026 300.3)
-
Step 200
200
#DDD3F5
oklch(88.5% 0.047 298.9)
-
Step 300
300
#C9B4F1
oklch(80.9% 0.087 300.2)
-
Step 400
400
#AE8BE9
oklch(70.6% 0.138 300.1)
-
Step 500
500
#9B6BE2
oklch(63.1% 0.176 300)
-
Step 600
600
#864FD0
oklch(55.5% 0.191 299.8)
-
Step 700
700 (this color)
#6B37AC
oklch(46.6% 0.178 299.9)
-
Step 800
800
#5D3592
oklch(42.7% 0.147 300)
-
Step 900
900
#4C2F74
oklch(37.6% 0.115 300.4)
-
Step 950
950
#2C1C44
oklch(26.9% 0.073 300)
#6B37AC 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) | #0054B0 | 0.126 |
| Deuteranopia (no green cones) | #0053AA | 0.126 |
| Tritanopia (no blue cones) | #5C526D | 0.133 |
| Achromatopsia (no color) | #545454 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B37AC
#6B37AC
oklch(46.6% 0.178 299.9)
- #526200
#526200
oklch(46.6% 0.111 120.1)
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 #6B37AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.033
- Bluey Purple #6241C7 ΔE 0.050
- Grape #7209B7 ΔE 0.056
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Blurple #5539CC ΔE 0.066
- Purple Blue #5D21D0 ΔE 0.072
- Blueberry #464196 ΔE 0.075
- Chrysanthemum #560BAD ΔE 0.076
Use #6B37AC 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.