#642997
Closest named color: Rebecca Purple (#663399). oklch(42.4% 0.171 304.5), rgb(100, 41, 151).
Aa
White text reads best on this color (9.10:1).
About this color
#642997 is a dark, vivid purple. In OKLCH its lightness is 42%, 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 0.020 away. White text reads best on it, at 9.10:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.30:1 |
| White text | 9.10:1 |
Values
| HEX | #642997 |
| RGB | rgb(100, 41, 151) |
| HSL | hsl(272, 57%, 38%) |
| OKLCH | oklch(42.4% 0.171 304.5) |
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 #642997 | 9.10:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #642997 | 2.30:1 | Fails | Lc 13.8 | Not readable |
| #642997 text on white | 9.10:1 | AAA | Lc 90.2 | Preferred for body text |
| #642997 text on black | 2.30:1 | Fails | Lc -12.1 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EEE5FA
oklch(93.5% 0.03 305.1)
-
Step 200
200
#E1D1F7
oklch(88.6% 0.054 304.4)
-
Step 300
300
#CFB1F5
oklch(81% 0.099 304.4)
-
Step 400
400
#B784F0
oklch(70.7% 0.16 304.4)
-
Step 500
500
#A660EB
oklch(63.1% 0.205 304.4)
-
Step 600
600
#9240D9
oklch(55.6% 0.222 304.5)
-
Step 700
700
#7C30BC
oklch(49% 0.206 304.4)
-
Step 800
800 (this color)
#642997
oklch(42.4% 0.171 304.5)
-
Step 900
900
#522879
oklch(37.6% 0.134 304.6)
-
Step 950
950
#301947
oklch(27% 0.084 304.4)
#642997 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 | 0.130 |
| Deuteranopia (no green cones) | #004895 | 0.131 |
| Tritanopia (no blue cones) | #5A435D | 0.123 |
| Achromatopsia (no color) | #484848 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642997
#642997
oklch(42.4% 0.171 304.5)
- #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 #642997, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.020
- Chrysanthemum #560BAD ΔE 0.060
- Grape #7209B7 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.066
- Blueberry #464196 ΔE 0.070
- Imperial Purple #480CA8 ΔE 0.077
- Purple #800080 ΔE 0.079
- Indigo #4B0082 ΔE 0.085
Use #642997 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.