#64237B
Closest named color: Rebecca Purple (#663399). oklch(39.6% 0.149 315.8), rgb(100, 35, 123).
Aa
White text reads best on this color (10.15:1).
About this color
#64237B is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.149 and its hue 316°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.057 away. White text reads best on it, at 10.15:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.06:1 |
| White text | 10.15:1 |
Values
| HEX | #64237B |
| RGB | rgb(100, 35, 123) |
| HSL | hsl(284, 56%, 31%) |
| OKLCH | oklch(39.6% 0.149 315.8) |
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 #64237B | 10.15:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #64237B | 2.06:1 | Fails | Lc 11.1 | Not readable |
| #64237B text on white | 10.15:1 | AAA | Lc 92.8 | Preferred for body text |
| #64237B text on black | 2.06:1 | Fails | Lc -9.6 | 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 900.
-
Step 50
50
#F9F3FC
oklch(97.1% 0.013 314.8)
-
Step 100
100
#F3E4F9
oklch(93.7% 0.032 316.4)
-
Step 200
200
#E9CDF5
oklch(88.4% 0.062 315.8)
-
Step 300
300
#DDAAF2
oklch(80.9% 0.113 315.8)
-
Step 400
400
#CB79EB
oklch(70.8% 0.179 315.8)
-
Step 500
500
#BD4EE4
oklch(63.1% 0.229 316)
-
Step 600
600
#A825D2
oklch(55.6% 0.249 315.8)
-
Step 700
700
#9011B6
oklch(49.1% 0.232 315.8)
-
Step 800
800
#751693
oklch(42.7% 0.191 315.9)
-
Step 900
900 (this color)
#64237B
oklch(39.6% 0.149 315.8)
-
Step 950
950
#381345
oklch(27.1% 0.095 316.1)
#64237B 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) | #003E7E | 0.141 |
| Deuteranopia (no green cones) | #224379 | 0.125 |
| Tritanopia (no blue cones) | #62344C | 0.096 |
| Achromatopsia (no color) | #414141 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64237B
#64237B
oklch(39.6% 0.149 315.8)
- #265300
#265300
oklch(39.4% 0.116 135.6)
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 #64237B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.057
- Purple #800080 ΔE 0.063
- Rich Purple #720058 ΔE 0.073
- Grape Purple #5D1451 ΔE 0.075
- Indigo #4B0082 ΔE 0.076
- Dark Slate Blue #483D8B ΔE 0.077
- Royal Purple #4B006E ΔE 0.079
- Velvet #750851 ΔE 0.083
Use #64237B 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.