#642A97
Closest named color: Rebecca Purple (#663399). oklch(42.5% 0.17 304.3), rgb(100, 42, 151).
Aa
White text reads best on this color (9.05:1).
About this color
#642A97 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.170 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 9.05:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.170) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.31:1 |
| White text | 9.05:1 |
Values
| HEX | #642A97 |
| RGB | rgb(100, 42, 151) |
| HSL | hsl(272, 56%, 38%) |
| OKLCH | oklch(42.5% 0.17 304.3) |
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 #642A97 | 9.05:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #642A97 | 2.31:1 | Fails | Lc 13.9 | Not readable |
| #642A97 text on white | 9.05:1 | AAA | Lc 90.1 | Preferred for body text |
| #642A97 text on black | 2.31:1 | Fails | Lc -12.2 | 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
#E1D1F7
oklch(88.6% 0.054 304.4)
-
Step 300
300
#CFB1F5
oklch(81% 0.099 304.4)
-
Step 400
400
#B785F0
oklch(70.8% 0.158 304.2)
-
Step 500
500
#A661EA
oklch(63.2% 0.202 304.5)
-
Step 600
600
#9141D8
oklch(55.5% 0.22 304.3)
-
Step 700
700
#7C31BC
oklch(49.1% 0.205 304.3)
-
Step 800
800 (this color)
#642A97
oklch(42.5% 0.17 304.3)
-
Step 900
900
#522979
oklch(37.8% 0.132 304.4)
-
Step 950
950
#301947
oklch(27% 0.084 304.4)
#642A97 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) | #00479A | 0.129 |
| Deuteranopia (no green cones) | #004995 | 0.131 |
| Tritanopia (no blue cones) | #5A445D | 0.124 |
| Achromatopsia (no color) | #494949 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642A97
#642A97
oklch(42.5% 0.17 304.3)
- #425700
#425700
oklch(42.4% 0.105 124.2)
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 #642A97, 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 0.061
- Grape #7209B7 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.065
- Blueberry #464196 ΔE 0.069
- Imperial Purple #480CA8 ΔE 0.078
- Purple #800080 ΔE 0.079
- Indigo #4B0082 ΔE 0.087
Use #642A97 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.