#673BA1
Closest named color: Rebecca Purple (#663399). oklch(45.9% 0.159 300), rgb(103, 59, 161).
Aa
White text reads best on this color (7.72:1).
About this color
#673BA1 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.159 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 0.021 away. White text reads best on it, at 7.72:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #673BA1 |
| RGB | rgb(103, 59, 161) |
| HSL | hsl(266, 46%, 43%) |
| OKLCH | oklch(45.9% 0.159 300) |
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 #673BA1 | 7.72:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #673BA1 | 2.71:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #673BA1 text on white | 7.72:1 | AAA | Lc 86.4 | Fine for body text |
| #673BA1 text on black | 2.71:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE6FA
oklch(93.6% 0.027 299.5)
-
Step 200
200
#DED2F7
oklch(88.5% 0.052 300.1)
-
Step 300
300
#CAB3F4
oklch(80.9% 0.093 300.5)
-
Step 400
400
#AF89EF
oklch(70.7% 0.149 299.8)
-
Step 500
500
#9D67E9
oklch(63.1% 0.19 300.2)
-
Step 600
600
#884AD7
oklch(55.5% 0.206 299.9)
-
Step 700
700
#743ABA
oklch(49.1% 0.191 300.1)
-
Step 800
800 (this color)
#673BA1
oklch(45.9% 0.159 300)
-
Step 900
900
#4D2D78
oklch(37.7% 0.124 300.2)
-
Step 950
950
#2D1B46
oklch(27% 0.078 300.6)
#673BA1 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) | #0052A4 | 0.118 |
| Deuteranopia (no green cones) | #12529F | 0.113 |
| Tritanopia (no blue cones) | #5A5168 | 0.120 |
| Achromatopsia (no color) | #535353 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673BA1
#673BA1
oklch(45.9% 0.159 300)
- #506000
#506000
oklch(45.9% 0.109 120.3)
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 #673BA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.021
- 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 0.072
- Blurple #5539CC ΔE 0.077
- Twilight #4E518B ΔE 0.078
Use #673BA1 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.