#6443A3
Closest named color: Rebecca Purple (#663399). oklch(46.9% 0.149 296), rgb(100, 67, 163).
Aa
White text reads best on this color (7.30:1).
About this color
#6443A3 is a medium-dark, vivid purple. In OKLCH its lightness is 47%, its chroma 0.149 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.037 away. White text reads best on it, at 7.30:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #6443A3 |
| RGB | rgb(100, 67, 163) |
| HSL | hsl(261, 42%, 45%) |
| OKLCH | oklch(46.9% 0.149 296) |
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 #6443A3 | 7.30:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #6443A3 | 2.87:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #6443A3 text on white | 7.30:1 | AAA | Lc 85.0 | Fine for body text |
| #6443A3 text on black | 2.87:1 | Fails | Lc -17.0 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F7
oklch(93.6% 0.022 297.4)
-
Step 200
200
#DBD4F1
oklch(88.4% 0.04 296.6)
-
Step 300
300
#C4B8EB
oklch(81% 0.072 295.5)
-
Step 400
400
#A791E0
oklch(70.7% 0.115 296.1)
-
Step 500
500
#9274D7
oklch(63.1% 0.147 295.9)
-
Step 600
600
#7D5AC5
oklch(55.5% 0.161 295.8)
-
Step 700
700 (this color)
#6443A3
oklch(46.9% 0.149 296)
-
Step 800
800
#563D8A
oklch(42.7% 0.123 295.7)
-
Step 900
900
#47356E
oklch(37.8% 0.095 296.1)
-
Step 950
950
#291F40
oklch(26.9% 0.061 296)
#6443A3 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) | #0B57A6 | 0.103 |
| Deuteranopia (no green cones) | #1C55A1 | 0.096 |
| Tritanopia (no blue cones) | #55576C | 0.117 |
| Achromatopsia (no color) | #565656 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6443A3
#6443A3
oklch(46.9% 0.149 296)
- #586100
#586100
oklch(46.9% 0.107 115.9)
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 #6443A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.037
- Blueberry #464196 ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.065
- Twilight #4E518B ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Iris #6258C4 ΔE 0.068
- Blurple #5539CC ΔE 0.075
Use #6443A3 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.