#673C74
Closest named color: Rebecca Purple (#663399). oklch(43.1% 0.102 318), rgb(103, 60, 116).
Aa
White text reads best on this color (8.48:1).
About this color
#673C74 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.102 and its hue 318°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.067 away. White text reads best on it, at 8.48:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.102) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.47:1 |
| White text | 8.48:1 |
Values
| HEX | #673C74 |
| RGB | rgb(103, 60, 116) |
| HSL | hsl(286, 32%, 35%) |
| OKLCH | oklch(43.1% 0.102 318) |
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 #673C74 | 8.48:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #673C74 | 2.47:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #673C74 text on white | 8.48:1 | AAA | Lc 89.0 | Fine for body text |
| #673C74 text on black | 2.47:1 | Fails | Lc -13.2 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#EFE6F1
oklch(93.5% 0.018 320.1)
-
Step 200
200
#E3D3E8
oklch(88.6% 0.033 318.1)
-
Step 300
300
#D1B5DA
oklch(80.9% 0.06 317.9)
-
Step 400
400
#BA8EC7
oklch(70.8% 0.095 318.4)
-
Step 500
500
#A870B9
oklch(63% 0.123 318.1)
-
Step 600
600
#9357A5
oklch(55.6% 0.133 318.1)
-
Step 700
700
#7D478D
oklch(49.1% 0.123 318.1)
-
Step 800
800 (this color)
#673C74
oklch(43.1% 0.102 318)
-
Step 900
900
#53335D
oklch(37.8% 0.08 317.8)
-
Step 950
950
#311E36
oklch(27% 0.05 319.1)
#673C74 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) | #324A76 | 0.090 |
| Deuteranopia (no green cones) | #3E4E72 | 0.081 |
| Tritanopia (no blue cones) | #674452 | 0.067 |
| Achromatopsia (no color) | #4D4D4D | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673C74
#673C74
oklch(43.1% 0.102 318)
- #315D21
#315D21
oklch(43.2% 0.102 138.3)
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 #673C74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.068
- Twilight #4E518B ΔE 0.070
- Dusk #4E5481 ΔE 0.073
- Light Eggplant #894585 ΔE 0.075
- Brownish Purple #76424E ΔE 0.077
- Dusty Grape #545775 ΔE 0.079
- Blueberry #464196 ΔE 0.080
Use #673C74 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.