#673CA1
Closest named color: Rebecca Purple (#663399). oklch(46% 0.157 299.8), rgb(103, 60, 161).
Aa
White text reads best on this color (7.67:1).
About this color
#673CA1 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.157 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.022 away. White text reads best on it, at 7.67:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #673CA1 |
| RGB | rgb(103, 60, 161) |
| HSL | hsl(266, 46%, 43%) |
| OKLCH | oklch(46% 0.157 299.8) |
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 #673CA1 | 7.67:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #673CA1 | 2.73:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #673CA1 text on white | 7.67:1 | AAA | Lc 86.2 | Fine for body text |
| #673CA1 text on black | 2.73:1 | Fails | Lc -15.9 | 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
#ECE7F7
oklch(93.7% 0.022 300.2)
-
Step 200
200
#DDD3F2
oklch(88.4% 0.043 300.2)
-
Step 300
300
#C8B6EB
oklch(80.9% 0.076 300.3)
-
Step 400
400
#AC8EE1
oklch(70.6% 0.122 299.9)
-
Step 500
500
#9970D9
oklch(63.1% 0.156 300)
-
Step 600
600
#8456C6
oklch(55.7% 0.169 299.9)
-
Step 700
700 (this color)
#673CA1
oklch(46% 0.157 299.8)
-
Step 800
800
#5B3A8A
oklch(42.7% 0.129 300)
-
Step 900
900
#4A326F
oklch(37.6% 0.103 299.6)
-
Step 950
950
#2B1E41
oklch(26.9% 0.064 299.2)
#673CA1 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) | #0053A4 | 0.117 |
| Deuteranopia (no green cones) | #15529F | 0.111 |
| Tritanopia (no blue cones) | #5A5269 | 0.119 |
| Achromatopsia (no color) | #535353 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673CA1
#673CA1
oklch(46% 0.157 299.8)
- #516000
#516000
oklch(46% 0.109 119.7)
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 #673CA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.022
- Blueberry #464196 ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- Grape #7209B7 ΔE 0.074
- Twilight #4E518B ΔE 0.076
- Blurple #5539CC ΔE 0.077
Use #673CA1 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.