#673A7C
Closest named color: Rebecca Purple (#663399). oklch(43.3% 0.115 314), rgb(103, 58, 124).
Aa
White text reads best on this color (8.49:1).
About this color
#673A7C is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.115 and its hue 314°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.052 away. White text reads best on it, at 8.49:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #673A7C |
| RGB | rgb(103, 58, 124) |
| HSL | hsl(281, 36%, 36%) |
| OKLCH | oklch(43.3% 0.115 314) |
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 #673A7C | 8.49:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #673A7C | 2.47:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #673A7C text on white | 8.49:1 | AAA | Lc 88.9 | Fine for body text |
| #673A7C text on black | 2.47:1 | Fails | Lc -13.3 | 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
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F3
oklch(93.6% 0.02 315.7)
-
Step 200
200
#E2D2EB
oklch(88.4% 0.038 313.6)
-
Step 300
300
#D1B4E0
oklch(80.9% 0.068 314.1)
-
Step 400
400
#B98CD0
oklch(70.7% 0.108 313.9)
-
Step 500
500
#A76EC3
oklch(63.1% 0.137 313.8)
-
Step 600
600
#9254AF
oklch(55.5% 0.149 314)
-
Step 700
700
#7D4497
oklch(49.2% 0.139 314.1)
-
Step 800
800 (this color)
#673A7C
oklch(43.3% 0.115 314)
-
Step 900
900
#533162
oklch(37.7% 0.09 314.8)
-
Step 950
950
#301D3A
oklch(26.9% 0.058 313.2)
#673A7C 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) | #2B4A7E | 0.099 |
| Deuteranopia (no green cones) | #394E7A | 0.088 |
| Tritanopia (no blue cones) | #654455 | 0.077 |
| Achromatopsia (no color) | #4D4D4D | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673A7C
#673A7C
oklch(43.3% 0.115 314)
- #345D0E
#345D0E
oklch(43.2% 0.115 133.9)
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 #673A7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.062
- Twilight #4E518B ΔE 0.070
- Blueberry #464196 ΔE 0.072
- Light Eggplant #894585 ΔE 0.074
- Dusk #4E5481 ΔE 0.077
- Dusty Grape #545775 ΔE 0.086
- Purple #800080 ΔE 0.088
Use #673A7C 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.