#643473
Closest named color: Rebecca Purple (#663399). oklch(41.4% 0.114 317.6), rgb(100, 52, 115).
Aa
White text reads best on this color (9.20:1).
About this color
#643473 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.114 and its hue 318°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.063 away. White text reads best on it, at 9.20:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.28:1 |
| White text | 9.20:1 |
Values
| HEX | #643473 |
| RGB | rgb(100, 52, 115) |
| HSL | hsl(286, 38%, 33%) |
| OKLCH | oklch(41.4% 0.114 317.6) |
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 #643473 | 9.20:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #643473 | 2.28:1 | Fails | Lc 13.1 | Not readable |
| #643473 text on white | 9.20:1 | AAA | Lc 90.9 | Preferred for body text |
| #643473 text on black | 2.28:1 | Fails | Lc -11.4 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#EFE6F2
oklch(93.5% 0.019 317.7)
-
Step 200
200
#E4D2E9
oklch(88.5% 0.037 318.9)
-
Step 300
300
#D3B4DD
oklch(81% 0.066 317.9)
-
Step 400
400
#BC8BCC
oklch(70.7% 0.107 317.6)
-
Step 500
500
#AB6DBF
oklch(63.2% 0.136 317.6)
-
Step 600
600
#9653AB
oklch(55.6% 0.148 317.6)
-
Step 700
700
#804393
oklch(49.2% 0.138 317.6)
-
Step 800
800 (this color)
#643473
oklch(41.4% 0.114 317.6)
-
Step 900
900
#553160
oklch(37.8% 0.088 317.9)
-
Step 950
950
#321D38
oklch(27.1% 0.056 318.5)
#643473 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) | #274475 | 0.103 |
| Deuteranopia (no green cones) | #364971 | 0.092 |
| Tritanopia (no blue cones) | #643D4E | 0.073 |
| Achromatopsia (no color) | #484848 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643473
#643473
oklch(41.4% 0.114 317.6)
- #295911
#295911
oklch(41.5% 0.114 137.5)
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 #643473, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.066
- Blueberry #464196 ΔE 0.081
- Grape Purple #5D1451 ΔE 0.082
- Twilight #4E518B ΔE 0.084
- Rich Purple #720058 ΔE 0.084
- Purple #800080 ΔE 0.085
- Velvet #750851 ΔE 0.085
Use #643473 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.