#64397A
Closest named color: Rebecca Purple (#663399). oklch(42.6% 0.113 313.1), rgb(100, 57, 122).
Aa
White text reads best on this color (8.72:1).
About this color
#64397A is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.113 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.054 away. White text reads best on it, at 8.72:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.113) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #64397A |
| RGB | rgb(100, 57, 122) |
| HSL | hsl(280, 36%, 35%) |
| OKLCH | oklch(42.6% 0.113 313.1) |
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 #64397A | 8.72:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #64397A | 2.40:1 | Fails | Lc 14.4 | Not readable |
| #64397A text on white | 8.72:1 | AAA | Lc 89.6 | Fine for body text |
| #64397A 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
#EEE6F3
oklch(93.5% 0.019 312.8)
-
Step 200
200
#E2D3EB
oklch(88.6% 0.036 313)
-
Step 300
300
#D0B5E0
oklch(81% 0.066 312.9)
-
Step 400
400
#B88DD0
oklch(70.8% 0.106 313)
-
Step 500
500
#A66FC3
oklch(63.1% 0.135 313.2)
-
Step 600
600
#9155AF
oklch(55.5% 0.147 313.3)
-
Step 700
700
#7B4597
oklch(49.1% 0.137 312.8)
-
Step 800
800 (this color)
#64397A
oklch(42.6% 0.113 313.1)
-
Step 900
900
#523262
oklch(37.7% 0.087 313.6)
-
Step 950
950
#301E3A
oklch(27.1% 0.055 312.7)
#64397A 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) | #29497C | 0.097 |
| Deuteranopia (no green cones) | #374C78 | 0.086 |
| Tritanopia (no blue cones) | #624354 | 0.076 |
| Achromatopsia (no color) | #4B4B4B | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64397A
#64397A
oklch(42.6% 0.113 313.1)
- #345B0B
#345B0B
oklch(42.6% 0.114 133.2)
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 #64397A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.058
- Blueberry #464196 ΔE 0.070
- Twilight #4E518B ΔE 0.071
- Dusk #4E5481 ΔE 0.077
- Light Eggplant #894585 ΔE 0.081
- Dusty Grape #545775 ΔE 0.087
- Purple #800080 ΔE 0.090
Use #64397A 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.