#673D9E
Closest named color: Rebecca Purple (#663399). oklch(46% 0.152 300.5), rgb(103, 61, 158).
Aa
White text reads best on this color (7.67:1).
About this color
#673D9E is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.152 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 (0.152) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #673D9E |
| RGB | rgb(103, 61, 158) |
| HSL | hsl(266, 44%, 43%) |
| OKLCH | oklch(46% 0.152 300.5) |
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 #673D9E | 7.67:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #673D9E | 2.73:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #673D9E text on white | 7.67:1 | AAA | Lc 86.2 | Fine for body text |
| #673D9E text on black | 2.73:1 | Fails | Lc -15.8 | 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
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD4F1
oklch(88.6% 0.041 299.7)
-
Step 300
300
#C8B6EA
oklch(80.9% 0.075 300.6)
-
Step 400
400
#AC8FDF
oklch(70.7% 0.118 300.1)
-
Step 500
500
#9971D6
oklch(63.1% 0.151 300.4)
-
Step 600
600
#8457C3
oklch(55.6% 0.164 300.4)
-
Step 700
700 (this color)
#673D9E
oklch(46% 0.152 300.5)
-
Step 800
800
#5B3A88
oklch(42.6% 0.126 300.7)
-
Step 900
900
#4A336D
oklch(37.6% 0.098 300)
-
Step 950
950
#2C1E40
oklch(27% 0.063 301.3)
#673D9E 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) | #0053A1 | 0.117 |
| Deuteranopia (no green cones) | #1D539C | 0.107 |
| Tritanopia (no blue cones) | #5B5167 | 0.115 |
| Achromatopsia (no color) | #535353 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673D9E
#673D9E
oklch(46% 0.152 300.5)
- #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 #673D9E, 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 0.059
- Dark Slate Blue #483D8B ΔE 0.063
- Bluey Purple #6241C7 ΔE 0.066
- Twilight #4E518B ΔE 0.072
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
- Grape #7209B7 ΔE 0.078
- Blurple #5539CC ΔE 0.082
Use #673D9E 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.