#640B4E
Closest named color: Grape Purple (#5D1451). oklch(34.6% 0.138 341), rgb(100, 11, 78).
Aa
White text reads best on this color (12.35:1).
About this color
#640B4E is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.138 and its hue 341°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.017 away. White text reads best on it, at 12.35:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.69:1 |
| White text | 12.35:1 |
Values
| HEX | #640B4E |
| RGB | rgb(100, 11, 78) |
| HSL | hsl(315, 80%, 22%) |
| OKLCH | oklch(34.6% 0.138 341) |
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 #640B4E | 12.35:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #640B4E | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #640B4E text on white | 12.35:1 | AAA | Lc 96.7 | Preferred for body text |
| #640B4E text on black | 1.69:1 | 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
#FCF2F8
oklch(97.1% 0.013 340.5)
-
Step 100
100
#F9E2F0
oklch(93.5% 0.031 340.6)
-
Step 200
200
#F5CBE5
oklch(88.6% 0.058 340.7)
-
Step 300
300
#EFA6D5
oklch(80.9% 0.104 340.8)
-
Step 400
400
#E372BF
oklch(70.6% 0.166 340.9)
-
Step 500
500
#D845AF
oklch(63.1% 0.213 340.9)
-
Step 600
600
#C3169A
oklch(55.6% 0.23 341.1)
-
Step 700
700
#A70083
oklch(49% 0.212 341)
-
Step 800
800
#880B6B
oklch(42.7% 0.177 340.8)
-
Step 900
900 (this color)
#640B4E
oklch(34.6% 0.138 341)
-
Step 950
950
#411033
oklch(27% 0.088 341)
#640B4E 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) | #152C50 | 0.155 |
| Deuteranopia (no green cones) | #32394C | 0.132 |
| Tritanopia (no blue cones) | #6B0E2D | 0.063 |
| Achromatopsia (no color) | #353535 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640B4E
#640B4E
oklch(34.6% 0.138 341)
- #00452C
#00452C
oklch(34.5% 0.076 161.2)
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 #640B4E, closest first.
No curated palette has a color within ΔE 0.04 of #640B4E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.017
- Rich Purple #720058 ΔE 0.034
- Velvet #750851 ΔE 0.038
- Merlot #730039 ΔE 0.051
- Plum Purple #4E0550 ΔE 0.054
- Deep Violet #490648 ΔE 0.065
- Wine #80013F ΔE 0.070
- Red Purple #820747 ΔE 0.070
Use #640B4E 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.