#642B89
Closest named color: Rebecca Purple (#663399). oklch(41.5% 0.153 309.1), rgb(100, 43, 137).
Aa
White text reads best on this color (9.33:1).
About this color
#642B89 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.153 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.030 away. White text reads best on it, at 9.33:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.24:1 |
| White text | 9.33:1 |
Values
| HEX | #642B89 |
| RGB | rgb(100, 43, 137) |
| HSL | hsl(276, 52%, 35%) |
| OKLCH | oklch(41.5% 0.153 309.1) |
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 #642B89 | 9.33:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #642B89 | 2.24:1 | Fails | Lc 13.0 | Not readable |
| #642B89 text on white | 9.33:1 | AAA | Lc 90.9 | Preferred for body text |
| #642B89 text on black | 2.24:1 | 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
#F8F3FC
oklch(97.1% 0.013 310.5)
-
Step 100
100
#EFE6F7
oklch(93.7% 0.025 309.4)
-
Step 200
200
#E3D1F3
oklch(88.6% 0.05 309.1)
-
Step 300
300
#D2B1ED
oklch(80.9% 0.09 309.4)
-
Step 400
400
#BB86E4
oklch(70.8% 0.143 309.1)
-
Step 500
500
#AA64DB
oklch(63.1% 0.182 309.3)
-
Step 600
600
#9547C9
oklch(55.7% 0.198 308.9)
-
Step 700
700
#7F37AE
oklch(49.1% 0.185 308.9)
-
Step 800
800 (this color)
#642B89
oklch(41.5% 0.153 309.1)
-
Step 900
900
#542B70
oklch(37.7% 0.119 309.2)
-
Step 950
950
#311A42
oklch(27% 0.076 308.7)
#642B89 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) | #00448C | 0.131 |
| Deuteranopia (no green cones) | #1A4787 | 0.122 |
| Tritanopia (no blue cones) | #5F3F56 | 0.107 |
| Achromatopsia (no color) | #474747 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642B89
#642B89
oklch(41.5% 0.153 309.1)
- #385700
#385700
oklch(41.6% 0.111 129.4)
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 #642B89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.030
- Dark Slate Blue #483D8B ΔE 0.062
- Purple #800080 ΔE 0.071
- Blueberry #464196 ΔE 0.071
- Chrysanthemum #560BAD ΔE 0.079
- Grape #7209B7 ΔE 0.083
- Indigo #4B0082 ΔE 0.084
- Dark Magenta #8B008B ΔE 0.085
Use #642B89 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.