#642381
Closest named color: Rebecca Purple (#663399). oklch(40% 0.155 313.3), rgb(100, 35, 129).
Aa
White text reads best on this color (10.00:1).
About this color
#642381 is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.155 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.049 away. White text reads best on it, at 10.00:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #642381 |
| RGB | rgb(100, 35, 129) |
| HSL | hsl(281, 57%, 32%) |
| OKLCH | oklch(40% 0.155 313.3) |
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 #642381 | 10.00:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #642381 | 2.09:1 | Fails | Lc 11.5 | Not readable |
| #642381 text on white | 10.00:1 | AAA | Lc 92.4 | Preferred for body text |
| #642381 text on black | 2.09:1 | Fails | Lc -10.0 | 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
#F9F3FD
oklch(97.2% 0.015 312.2)
-
Step 100
100
#F2E4FA
oklch(93.6% 0.033 313.5)
-
Step 200
200
#E8CDF8
oklch(88.4% 0.065 312.9)
-
Step 300
300
#DBAAF6
oklch(80.9% 0.117 313.2)
-
Step 400
400
#C978F1
oklch(70.7% 0.186 313.5)
-
Step 500
500
#BA4CEC
oklch(63% 0.238 313.2)
-
Step 600
600
#A61FDA
oklch(55.6% 0.258 313.3)
-
Step 700
700
#8E07BD
oklch(49% 0.24 313.3)
-
Step 800
800
#741299
oklch(42.8% 0.199 313.5)
-
Step 900
900 (this color)
#642381
oklch(40% 0.155 313.3)
-
Step 950
950
#371247
oklch(26.9% 0.099 313.9)
#642381 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) | #003F84 | 0.140 |
| Deuteranopia (no green cones) | #1B447F | 0.130 |
| Tritanopia (no blue cones) | #61374F | 0.104 |
| Achromatopsia (no color) | #424242 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642381
#642381
oklch(40% 0.155 313.3)
- #2D5400
#2D5400
oklch(40.1% 0.114 133.3)
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 #642381, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.049
- Purple #800080 ΔE 0.063
- Indigo #4B0082 ΔE 0.074
- Dark Slate Blue #483D8B ΔE 0.074
- Royal Purple #4B006E ΔE 0.081
- Rich Purple #720058 ΔE 0.082
- Dark Magenta #8B008B ΔE 0.083
- Grape Purple #5D1451 ΔE 0.085
Use #642381 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.