#684399
Closest named color: Rebecca Purple (#663399). oklch(46.7% 0.137 301.1), rgb(104, 67, 153).
Aa
White text reads best on this color (7.36:1).
About this color
#684399 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.137 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.036 away. White text reads best on it, at 7.36:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #684399 |
| RGB | rgb(104, 67, 153) |
| HSL | hsl(266, 39%, 43%) |
| OKLCH | oklch(46.7% 0.137 301.1) |
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 #684399 | 7.36:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #684399 | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #684399 text on white | 7.36:1 | AAA | Lc 85.3 | Fine for body text |
| #684399 text on black | 2.85:1 | Fails | Lc -16.7 | 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 700.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DDD4EE
oklch(88.5% 0.037 301.4)
-
Step 300
300
#C8B7E5
oklch(80.9% 0.066 301.8)
-
Step 400
400
#AC91D8
oklch(70.7% 0.105 301.2)
-
Step 500
500
#9874CE
oklch(63.1% 0.136 301.1)
-
Step 600
600
#835BBA
oklch(55.6% 0.146 301.2)
-
Step 700
700 (this color)
#684399
oklch(46.7% 0.137 301.1)
-
Step 800
800
#5A3D82
oklch(42.6% 0.113 301.1)
-
Step 900
900
#4A3568
oklch(37.7% 0.087 301.3)
-
Step 950
950
#2B1F3D
oklch(26.9% 0.056 301.2)
#684399 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) | #21559C | 0.100 |
| Deuteranopia (no green cones) | #2D5597 | 0.092 |
| Tritanopia (no blue cones) | #5E5467 | 0.104 |
| Achromatopsia (no color) | #565656 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684399
#684399
oklch(46.7% 0.137 301.1)
- #516300
#516300
oklch(46.8% 0.112 121.2)
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 #684399, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.036
- Blueberry #464196 ΔE 0.060
- Twilight #4E518B ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.064
- Light Eggplant #894585 ΔE 0.072
- Bluey Purple #6241C7 ΔE 0.075
- Dusk #4E5481 ΔE 0.076
- Iris #6258C4 ΔE 0.080
Use #684399 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.