#644083
Closest named color: Rebecca Purple (#663399). oklch(44.3% 0.112 307.2), rgb(100, 64, 131).
Aa
White text reads best on this color (8.06:1).
About this color
#644083 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.112 and its hue 307°. 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 8.06:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.60:1 |
| White text | 8.06:1 |
Values
| HEX | #644083 |
| RGB | rgb(100, 64, 131) |
| HSL | hsl(272, 34%, 38%) |
| OKLCH | oklch(44.3% 0.112 307.2) |
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 #644083 | 8.06:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #644083 | 2.60:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #644083 text on white | 8.06:1 | AAA | Lc 87.7 | Fine for body text |
| #644083 text on black | 2.60:1 | Fails | Lc -14.4 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F4
oklch(93.6% 0.018 306.7)
-
Step 200
200
#DFD3EC
oklch(88.4% 0.036 307.2)
-
Step 300
300
#CCB6E2
oklch(80.9% 0.065 307.6)
-
Step 400
400
#B28FD4
oklch(70.7% 0.105 307.1)
-
Step 500
500
#9F72C8
oklch(63.2% 0.133 307.1)
-
Step 600
600
#8A58B5
oklch(55.6% 0.146 307.1)
-
Step 700
700
#75489B
oklch(49.1% 0.134 307.2)
-
Step 800
800 (this color)
#644083
oklch(44.3% 0.112 307.2)
-
Step 900
900
#4E3365
oklch(37.6% 0.088 307.6)
-
Step 950
950
#2E1E3B
oklch(26.9% 0.056 308.5)
#644083 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) | #2E4F85 | 0.086 |
| Deuteranopia (no green cones) | #385081 | 0.078 |
| Tritanopia (no blue cones) | #5F4B5B | 0.081 |
| Achromatopsia (no color) | #505050 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644083
#644083
oklch(44.3% 0.112 307.2)
- #425E05
#425E05
oklch(44.3% 0.112 127.3)
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 #644083, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.054
- Twilight #4E518B ΔE 0.055
- Blueberry #464196 ΔE 0.061
- Dusk #4E5481 ΔE 0.063
- Light Eggplant #894585 ΔE 0.073
- Dusty Grape #545775 ΔE 0.076
- Denim Blue #3B5B92 ΔE 0.089
Use #644083 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.