#642E9C
Closest named color: Rebecca Purple (#663399). oklch(43.4% 0.17 302.2), rgb(100, 46, 156).
Aa
White text reads best on this color (8.70:1).
About this color
#642E9C is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.170 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.012 away. White text reads best on it, at 8.70:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.170) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #642E9C |
| RGB | rgb(100, 46, 156) |
| HSL | hsl(269, 54%, 40%) |
| OKLCH | oklch(43.4% 0.17 302.2) |
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 #642E9C | 8.70:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #642E9C | 2.41:1 | Fails | Lc 14.8 | Not readable |
| #642E9C text on white | 8.70:1 | AAA | Lc 89.2 | Fine for body text |
| #642E9C text on black | 2.41:1 | Fails | Lc -13.1 | Not readable |
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
#EDE6FA
oklch(93.6% 0.028 301.7)
-
Step 200
200
#E0D1F8
oklch(88.5% 0.055 302.8)
-
Step 300
300
#CCB1F6
oklch(80.8% 0.1 302.1)
-
Step 400
400
#B486F2
oklch(70.8% 0.158 302.2)
-
Step 500
500
#A262ED
oklch(63.1% 0.203 302.1)
-
Step 600
600
#8E43DB
oklch(55.6% 0.22 302.2)
-
Step 700
700
#7933BE
oklch(49.1% 0.205 302.3)
-
Step 800
800 (this color)
#642E9C
oklch(43.4% 0.17 302.2)
-
Step 900
900
#502A7A
oklch(37.8% 0.131 302.4)
-
Step 950
950
#2F1948
oklch(27% 0.085 302.7)
#642E9C 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) | #004A9F | 0.125 |
| Deuteranopia (no green cones) | #004B9A | 0.126 |
| Tritanopia (no blue cones) | #584861 | 0.126 |
| Achromatopsia (no color) | #4B4B4B | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642E9C
#642E9C
oklch(43.4% 0.17 302.2)
- #475900
#475900
oklch(43.3% 0.105 122.2)
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 #642E9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.012
- Grape #7209B7 ΔE 0.060
- Chrysanthemum #560BAD ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.064
- Blueberry #464196 ΔE 0.064
- Bluey Purple #6241C7 ΔE 0.078
- Imperial Purple #480CA8 ΔE 0.079
- Blue With A Hint Of Purple #533CC6 ΔE 0.079
Use #642E9C 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.