#642A98
Closest named color: Rebecca Purple (#663399). oklch(42.6% 0.171 304), rgb(100, 42, 152).
Aa
White text reads best on this color (9.02:1).
About this color
#642A98 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.171 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.018 away. White text reads best on it, at 9.02:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #642A98 |
| RGB | rgb(100, 42, 152) |
| HSL | hsl(272, 57%, 38%) |
| OKLCH | oklch(42.6% 0.171 304) |
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 #642A98 | 9.02:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #642A98 | 2.32:1 | Fails | Lc 14.0 | Not readable |
| #642A98 text on white | 9.02:1 | AAA | Lc 90.0 | Fine for body text |
| #642A98 text on black | 2.32:1 | Fails | Lc -12.3 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EEE6FA
oklch(93.7% 0.028 303.9)
-
Step 200
200
#E1D1F8
oklch(88.6% 0.056 303.9)
-
Step 300
300
#CEB1F5
oklch(80.9% 0.099 303.8)
-
Step 400
400
#B784F0
oklch(70.7% 0.16 304.4)
-
Step 500
500
#A560EB
oklch(63% 0.204 304)
-
Step 600
600
#9141D9
oklch(55.6% 0.221 304.1)
-
Step 700
700
#7C31BC
oklch(49.1% 0.205 304.3)
-
Step 800
800 (this color)
#642A98
oklch(42.6% 0.171 304)
-
Step 900
900
#522979
oklch(37.8% 0.132 304.4)
-
Step 950
950
#301947
oklch(27% 0.084 304.4)
#642A98 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) | #00489B | 0.129 |
| Deuteranopia (no green cones) | #004996 | 0.130 |
| Tritanopia (no blue cones) | #5A445E | 0.123 |
| Achromatopsia (no color) | #494949 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642A98
#642A98
oklch(42.6% 0.171 304)
- #435700
#435700
oklch(42.4% 0.105 123.6)
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 #642A98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.018
- Chrysanthemum #560BAD ΔE 0.060
- Grape #7209B7 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.066
- Blueberry #464196 ΔE 0.069
- Imperial Purple #480CA8 ΔE 0.078
- Purple #800080 ΔE 0.080
- Indigo #4B0082 ΔE 0.087
Use #642A98 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.