#6C33A4
Closest named color: Rebecca Purple (#663399). oklch(45.6% 0.174 303.2), rgb(108, 51, 164).
Aa
White text reads best on this color (7.93:1).
About this color
#6C33A4 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.174 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.021 away. White text reads best on it, at 7.93:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #6C33A4 |
| RGB | rgb(108, 51, 164) |
| HSL | hsl(270, 53%, 42%) |
| OKLCH | oklch(45.6% 0.174 303.2) |
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 #6C33A4 | 7.93:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #6C33A4 | 2.64:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #6C33A4 text on white | 7.93:1 | AAA | Lc 86.9 | Fine for body text |
| #6C33A4 text on black | 2.64:1 | Fails | Lc -15.2 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EEE6FB
oklch(93.7% 0.029 303.1)
-
Step 200
200
#E0D1F9
oklch(88.5% 0.057 302.3)
-
Step 300
300
#CEB1F7
oklch(81% 0.101 303.2)
-
Step 400
400
#B684F3
oklch(70.7% 0.163 303.3)
-
Step 500
500
#A560EE
oklch(63.2% 0.208 303.4)
-
Step 600
600
#9040DC
oklch(55.6% 0.225 303.1)
-
Step 700
700
#7B2FBF
oklch(49% 0.21 303.3)
-
Step 800
800 (this color)
#6C33A4
oklch(45.6% 0.174 303.2)
-
Step 900
900
#51287B
oklch(37.7% 0.136 303.1)
-
Step 950
950
#2F1948
oklch(27% 0.085 302.7)
#6C33A4 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) | #0050A7 | 0.132 |
| Deuteranopia (no green cones) | #0051A2 | 0.133 |
| Tritanopia (no blue cones) | #614D67 | 0.128 |
| Achromatopsia (no color) | #515151 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C33A4
#6C33A4
oklch(45.6% 0.174 303.2)
- #4B6000
#4B6000
oklch(45.5% 0.112 123.2)
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 #6C33A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.021
- Grape #7209B7 ΔE 0.055
- Bluey Purple #6241C7 ΔE 0.064
- Blue With A Hint Of Purple #533CC6 ΔE 0.073
- Chrysanthemum #560BAD ΔE 0.074
- Blueberry #464196 ΔE 0.074
- Dark Slate Blue #483D8B ΔE 0.078
- Blurple #5539CC ΔE 0.079
Use #6C33A4 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.