#64318E
Closest named color: Rebecca Purple (#663399). oklch(42.7% 0.15 306.3), rgb(100, 49, 142).
Aa
White text reads best on this color (8.85:1).
About this color
#64318E is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.150 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.019 away. White text reads best on it, at 8.85:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #64318E |
| RGB | rgb(100, 49, 142) |
| HSL | hsl(273, 49%, 37%) |
| OKLCH | oklch(42.7% 0.15 306.3) |
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 #64318E | 8.85:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #64318E | 2.37:1 | Fails | Lc 14.2 | Not readable |
| #64318E text on white | 8.85:1 | AAA | Lc 89.7 | Fine for body text |
| #64318E text on black | 2.37:1 | Fails | Lc -12.5 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EEE6F8
oklch(93.6% 0.025 305.8)
-
Step 200
200
#E1D1F3
oklch(88.4% 0.049 306.6)
-
Step 300
300
#CFB2EE
oklch(80.9% 0.088 306.5)
-
Step 400
400
#B788E5
oklch(70.8% 0.14 306.4)
-
Step 500
500
#A566DD
oklch(63% 0.18 306.4)
-
Step 600
600
#904ACB
oklch(55.6% 0.195 306)
-
Step 700
700
#7B3AAF
oklch(49.1% 0.18 306.3)
-
Step 800
800 (this color)
#64318E
oklch(42.7% 0.15 306.3)
-
Step 900
900
#512D71
oklch(37.7% 0.115 306)
-
Step 950
950
#301B42
oklch(27% 0.073 307)
#64318E 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) | #004891 | 0.125 |
| Deuteranopia (no green cones) | #1C4A8C | 0.114 |
| Tritanopia (no blue cones) | #5D445B | 0.106 |
| Achromatopsia (no color) | #4A4A4A | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64318E
#64318E
oklch(42.7% 0.15 306.3)
- #405900
#405900
oklch(42.8% 0.109 126.1)
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 #64318E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.019
- Dark Slate Blue #483D8B ΔE 0.056
- Blueberry #464196 ΔE 0.062
- Purple #800080 ΔE 0.079
- Chrysanthemum #560BAD ΔE 0.079
- Grape #7209B7 ΔE 0.081
- Twilight #4E518B ΔE 0.085
- Dark Magenta #8B008B ΔE 0.089
Use #64318E 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.