#641C66
Closest named color: Grape Purple (#5D1451). oklch(37.4% 0.138 326.8), rgb(100, 28, 102).
Aa
White text reads best on this color (11.05:1).
About this color
#641C66 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.138 and its hue 327°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.040 away. White text reads best on it, at 11.05:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.89:1 |
| White text | 11.05:1 |
Values
| HEX | #641C66 |
| RGB | rgb(100, 28, 102) |
| HSL | hsl(298, 57%, 25%) |
| OKLCH | oklch(37.4% 0.138 326.8) |
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 #641C66 | 11.05:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #641C66 | 1.89:1 | Fails | Lc 9.2 | Not readable |
| #641C66 text on white | 11.05:1 | AAA | Lc 94.7 | Preferred for body text |
| #641C66 text on black | 1.89:1 | Fails | Lc -7.9 | 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 900.
-
Step 50
50
#FBF2FA
oklch(97% 0.014 329.1)
-
Step 100
100
#F5E3F5
oklch(93.5% 0.031 325.8)
-
Step 200
200
#EECCED
oklch(88.4% 0.058 327)
-
Step 300
300
#E5A9E4
oklch(80.9% 0.104 327)
-
Step 400
400
#D577D6
oklch(70.6% 0.167 326.8)
-
Step 500
500
#C84ECB
oklch(63.1% 0.212 326.8)
-
Step 600
600
#B327B8
oklch(55.6% 0.231 326.6)
-
Step 700
700
#9A159E
oklch(49.1% 0.215 326.8)
-
Step 800
800
#7D1880
oklch(42.7% 0.177 326.8)
-
Step 900
900 (this color)
#641C66
oklch(37.4% 0.138 326.8)
-
Step 950
950
#3B133C
oklch(26.9% 0.087 326.7)
#641C66 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) | #0E3668 | 0.146 |
| Deuteranopia (no green cones) | #2D3F64 | 0.124 |
| Tritanopia (no blue cones) | #67273F | 0.078 |
| Achromatopsia (no color) | #3C3C3C | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #641C66
#641C66
oklch(37.4% 0.138 326.8)
- #004F17
#004F17
oklch(37.2% 0.112 146.7)
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 #641C66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.040
- Rich Purple #720058 ΔE 0.044
- Velvet #750851 ΔE 0.053
- Plum Purple #4E0550 ΔE 0.071
- Purple #800080 ΔE 0.073
- Royal Purple #4B006E ΔE 0.074
- Merlot #730039 ΔE 0.084
- Red Purple #820747 ΔE 0.084
Use #641C66 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.