#640641
Closest named color: Grape Purple (#5D1451). oklch(33.6% 0.134 349.5), rgb(100, 6, 65).
Aa
White text reads best on this color (12.77:1).
About this color
#640641 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.134 and its hue 349°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.033 away. White text reads best on it, at 12.77:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.134) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.64:1 |
| White text | 12.77:1 |
Values
| HEX | #640641 |
| RGB | rgb(100, 6, 65) |
| HSL | hsl(322, 89%, 21%) |
| OKLCH | oklch(33.6% 0.134 349.5) |
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 #640641 | 12.77:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #640641 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #640641 text on white | 12.77:1 | AAA | Lc 97.3 | Preferred for body text |
| #640641 text on black | 1.64:1 | Fails | Lc 0.0 | 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
#FDF2F7
oklch(97.1% 0.013 347.9)
-
Step 100
100
#FAE2ED
oklch(93.5% 0.03 348.2)
-
Step 200
200
#F7CBDF
oklch(88.6% 0.056 349.2)
-
Step 300
300
#F2A6CA
oklch(80.9% 0.1 349.6)
-
Step 400
400
#E872AF
oklch(70.7% 0.161 349.7)
-
Step 500
500
#DD459C
oklch(63.1% 0.205 349.4)
-
Step 600
600
#C81486
oklch(55.5% 0.223 349.5)
-
Step 700
700
#AC0072
oklch(49.1% 0.205 349.4)
-
Step 800
800
#8C0A5D
oklch(42.7% 0.172 349.3)
-
Step 900
900 (this color)
#640641
oklch(33.6% 0.134 349.5)
-
Step 950
950
#43102D
oklch(27.1% 0.086 349.3)
#640641 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) | #1A2842 | 0.153 |
| Deuteranopia (no green cones) | #36383F | 0.132 |
| Tritanopia (no blue cones) | #6C0024 | 0.053 |
| Achromatopsia (no color) | #323232 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640641
#640641
oklch(33.6% 0.134 349.5)
- #004231
#004231
oklch(33.7% 0.067 169)
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 #640641, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.033
- Merlot #730039 ΔE 0.037
- Velvet #750851 ΔE 0.046
- Rich Purple #720058 ΔE 0.049
- Burgundy #610023 ΔE 0.051
- Plum Purple #4E0550 ΔE 0.062
- Wine #80013F ΔE 0.064
- Bordeaux #7B002C ΔE 0.066
Use #640641 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.