#6B37A8
Closest named color: Rebecca Purple (#663399). oklch(46.3% 0.173 300.9), rgb(107, 55, 168).
Aa
White text reads best on this color (7.67:1).
About this color
#6B37A8 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.173 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.027 away. White text reads best on it, at 7.67:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.173) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #6B37A8 |
| RGB | rgb(107, 55, 168) |
| HSL | hsl(268, 51%, 44%) |
| OKLCH | oklch(46.3% 0.173 300.9) |
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 #6B37A8 | 7.67:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #6B37A8 | 2.73:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #6B37A8 text on white | 7.67:1 | AAA | Lc 86.1 | Fine for body text |
| #6B37A8 text on black | 2.73:1 | Fails | Lc -16.0 | 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
#ECE6F8
oklch(93.5% 0.025 301.1)
-
Step 200
200
#DED3F4
oklch(88.6% 0.046 300.7)
-
Step 300
300
#C9B5EF
oklch(81% 0.083 300.3)
-
Step 400
400
#AF8CE7
oklch(70.8% 0.134 300.8)
-
Step 500
500
#9C6CDF
oklch(63.1% 0.171 300.9)
-
Step 600
600
#8750CD
oklch(55.5% 0.187 300.7)
-
Step 700
700 (this color)
#6B37A8
oklch(46.3% 0.173 300.9)
-
Step 800
800
#5D368F
oklch(42.7% 0.142 300.7)
-
Step 900
900
#4C3073
oklch(37.7% 0.112 300.4)
-
Step 950
950
#2D1D43
oklch(27.1% 0.07 301.3)
#6B37A8 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) | #0053AB | 0.126 |
| Deuteranopia (no green cones) | #0053A6 | 0.128 |
| Tritanopia (no blue cones) | #5E516B | 0.129 |
| Achromatopsia (no color) | #535353 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B37A8
#6B37A8
oklch(46.3% 0.173 300.9)
- #506100
#506100
oklch(46.2% 0.111 120.8)
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 #6B37A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.027
- Bluey Purple #6241C7 ΔE 0.055
- Grape #7209B7 ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.066
- Blurple #5539CC ΔE 0.071
- Blueberry #464196 ΔE 0.072
- Chrysanthemum #560BAD ΔE 0.077
- Purple Blue #5D21D0 ΔE 0.078
Use #6B37A8 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.