#64338F
Closest named color: Rebecca Purple (#663399). oklch(43.1% 0.148 305.6), rgb(100, 51, 143).
Aa
White text reads best on this color (8.70:1).
About this color
#64338F is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.148 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 0.017 away. White text reads best on it, at 8.70:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #64338F |
| RGB | rgb(100, 51, 143) |
| HSL | hsl(272, 47%, 38%) |
| OKLCH | oklch(43.1% 0.148 305.6) |
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 #64338F | 8.70:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #64338F | 2.41:1 | Fails | Lc 14.6 | Not readable |
| #64338F text on white | 8.70:1 | AAA | Lc 89.4 | Fine for body text |
| #64338F text on black | 2.41:1 | Fails | Lc -12.9 | 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
#E1D2F3
oklch(88.6% 0.047 305.9)
-
Step 300
300
#CEB3EE
oklch(81% 0.086 305.4)
-
Step 400
400
#B588E5
oklch(70.6% 0.139 305.4)
-
Step 500
500
#A467DD
oklch(63.1% 0.178 305.8)
-
Step 600
600
#8F4BCB
oklch(55.6% 0.193 305.4)
-
Step 700
700
#7A3BAF
oklch(49.1% 0.179 305.7)
-
Step 800
800 (this color)
#64338F
oklch(43.1% 0.148 305.6)
-
Step 900
900
#512D71
oklch(37.7% 0.115 306)
-
Step 950
950
#2F1B42
oklch(26.9% 0.073 305.8)
#64338F 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) | #004A92 | 0.123 |
| Deuteranopia (no green cones) | #1E4B8D | 0.111 |
| Tritanopia (no blue cones) | #5D465C | 0.107 |
| Achromatopsia (no color) | #4B4B4B | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64338F
#64338F
oklch(43.1% 0.148 305.6)
- #425A00
#425A00
oklch(43.2% 0.109 125.5)
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 #64338F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.017
- Dark Slate Blue #483D8B ΔE 0.054
- Blueberry #464196 ΔE 0.060
- Chrysanthemum #560BAD ΔE 0.081
- Twilight #4E518B ΔE 0.081
- Purple #800080 ΔE 0.081
- Grape #7209B7 ΔE 0.082
- Dark Magenta #8B008B ΔE 0.091
Use #64338F 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.