#64387D
Closest named color: Rebecca Purple (#663399). oklch(42.6% 0.119 311.8), rgb(100, 56, 125).
Aa
White text reads best on this color (8.73:1).
About this color
#64387D is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.119 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.049 away. White text reads best on it, at 8.73:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #64387D |
| RGB | rgb(100, 56, 125) |
| HSL | hsl(278, 38%, 35%) |
| OKLCH | oklch(42.6% 0.119 311.8) |
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 #64387D | 8.73:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #64387D | 2.40:1 | Fails | Lc 14.4 | Not readable |
| #64387D text on white | 8.73:1 | AAA | Lc 89.6 | Fine for body text |
| #64387D text on black | 2.40:1 | Fails | Lc -12.6 | 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 800.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EEE6F4
oklch(93.5% 0.021 311.1)
-
Step 200
200
#E2D2EC
oklch(88.5% 0.039 312.6)
-
Step 300
300
#D0B4E2
oklch(80.9% 0.07 312.1)
-
Step 400
400
#B88CD3
oklch(70.7% 0.111 312)
-
Step 500
500
#A66EC7
oklch(63.2% 0.141 311.9)
-
Step 600
600
#9154B4
oklch(55.7% 0.154 311.7)
-
Step 700
700
#7B449A
oklch(49.1% 0.142 311.8)
-
Step 800
800 (this color)
#64387D
oklch(42.6% 0.119 311.8)
-
Step 900
900
#523165
oklch(37.7% 0.093 312)
-
Step 950
950
#301D3B
oklch(27% 0.059 312.1)
#64387D 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) | #26497F | 0.100 |
| Deuteranopia (no green cones) | #344C7B | 0.090 |
| Tritanopia (no blue cones) | #614455 | 0.082 |
| Achromatopsia (no color) | #4B4B4B | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64387D
#64387D
oklch(42.6% 0.119 311.8)
- #355B00
#355B00
oklch(42.6% 0.118 131.9)
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 #64387D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.056
- Blueberry #464196 ΔE 0.068
- Twilight #4E518B ΔE 0.072
- Dusk #4E5481 ΔE 0.079
- Light Eggplant #894585 ΔE 0.082
- Purple #800080 ΔE 0.087
- Dusty Grape #545775 ΔE 0.091
Use #64387D 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.