#642A86
Closest named color: Rebecca Purple (#663399). oklch(41.2% 0.151 310.4), rgb(100, 42, 134).
Aa
White text reads best on this color (9.47:1).
About this color
#642A86 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.151 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.035 away. White text reads best on it, at 9.47:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.21:1 |
| White text | 9.47:1 |
Values
| HEX | #642A86 |
| RGB | rgb(100, 42, 134) |
| HSL | hsl(278, 52%, 35%) |
| OKLCH | oklch(41.2% 0.151 310.4) |
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 #642A86 | 9.47:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #642A86 | 2.21:1 | Fails | Lc 12.7 | Not readable |
| #642A86 text on white | 9.47:1 | AAA | Lc 91.3 | Preferred for body text |
| #642A86 text on black | 2.21:1 | Fails | Lc -11.1 | 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
#EFE5F7
oklch(93.5% 0.026 310.4)
-
Step 200
200
#E3D1F2
oklch(88.5% 0.049 309.7)
-
Step 300
300
#D2B1EB
oklch(80.8% 0.087 310.2)
-
Step 400
400
#BC86E2
oklch(70.8% 0.141 310.2)
-
Step 500
500
#AB64D9
oklch(63.1% 0.18 310.3)
-
Step 600
600
#9747C6
oklch(55.7% 0.195 310.6)
-
Step 700
700
#8037AB
oklch(49.1% 0.182 310.3)
-
Step 800
800 (this color)
#642A86
oklch(41.2% 0.151 310.4)
-
Step 900
900
#552B6F
oklch(37.7% 0.118 310.5)
-
Step 950
950
#321A41
oklch(27.1% 0.075 310.8)
#642A86 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) | #004389 | 0.133 |
| Deuteranopia (no green cones) | #1D4784 | 0.121 |
| Tritanopia (no blue cones) | #5F3D54 | 0.104 |
| Achromatopsia (no color) | #464646 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642A86
#642A86
oklch(41.2% 0.151 310.4)
- #355600
#355600
oklch(41.2% 0.112 130.5)
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 #642A86, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.035
- Dark Slate Blue #483D8B ΔE 0.064
- Purple #800080 ΔE 0.069
- Blueberry #464196 ΔE 0.074
- Indigo #4B0082 ΔE 0.082
- Chrysanthemum #560BAD ΔE 0.082
- Dark Magenta #8B008B ΔE 0.085
- Grape #7209B7 ΔE 0.087
Use #642A86 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.