#6337B0
Closest named color: Rebecca Purple (#663399). oklch(46% 0.181 294.9), rgb(99, 55, 176).
Aa
White text reads best on this color (7.76:1).
About this color
#6337B0 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.181 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.038 away. White text reads best on it, at 7.76:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.70:1 |
| White text | 7.76:1 |
Values
| HEX | #6337B0 |
| RGB | rgb(99, 55, 176) |
| HSL | hsl(262, 52%, 45%) |
| OKLCH | oklch(46% 0.181 294.9) |
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 #6337B0 | 7.76:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #6337B0 | 2.70:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #6337B0 text on white | 7.76:1 | AAA | Lc 86.3 | Fine for body text |
| #6337B0 text on black | 2.70:1 | Fails | Lc -15.7 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7FA
oklch(93.7% 0.026 295.5)
-
Step 200
200
#DBD3F7
oklch(88.5% 0.05 295.5)
-
Step 300
300
#C4B6F4
oklch(80.9% 0.088 294.7)
-
Step 400
400
#A78DEE
oklch(70.6% 0.14 294.9)
-
Step 500
500
#936DE9
oklch(63% 0.18 294.8)
-
Step 600
600
#7F51D7
oklch(55.6% 0.196 295)
-
Step 700
700 (this color)
#6337B0
oklch(46% 0.181 294.9)
-
Step 800
800
#573797
oklch(42.8% 0.15 294.6)
-
Step 900
900
#473178
oklch(37.7% 0.116 294.4)
-
Step 950
950
#2A1D46
oklch(27% 0.074 295.6)
#6337B0 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) | #0053B4 | 0.112 |
| Deuteranopia (no green cones) | #0050AE | 0.112 |
| Tritanopia (no blue cones) | #4E556F | 0.142 |
| Achromatopsia (no color) | #525252 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6337B0
#6337B0
oklch(46% 0.181 294.9)
- #575E00
#575E00
oklch(46% 0.104 114.7)
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 #6337B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.038
- Bluey Purple #6241C7 ΔE 0.042
- Blue With A Hint Of Purple #533CC6 ΔE 0.046
- Blurple #5539CC ΔE 0.052
- Grape #7209B7 ΔE 0.058
- Purple Blue #5D21D0 ΔE 0.061
- Chrysanthemum #560BAD ΔE 0.067
- Blueberry #464196 ΔE 0.067
Use #6337B0 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.