#683689
Closest named color: Rebecca Purple (#663399). oklch(43.6% 0.138 309.6), rgb(104, 54, 137).
Aa
White text reads best on this color (8.47:1).
About this color
#683689 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.138 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.028 away. White text reads best on it, at 8.47:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.47:1 |
| White text | 8.47:1 |
Values
| HEX | #683689 |
| RGB | rgb(104, 54, 137) |
| HSL | hsl(276, 43%, 37%) |
| OKLCH | oklch(43.6% 0.138 309.6) |
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 #683689 | 8.47:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #683689 | 2.47:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #683689 text on white | 8.47:1 | AAA | Lc 88.8 | Fine for body text |
| #683689 text on black | 2.47:1 | Fails | Lc -13.4 | 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
#F8F4FB
oklch(97.2% 0.01 311.2)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E2D2F0
oklch(88.6% 0.044 309.3)
-
Step 300
300
#D0B3E8
oklch(80.9% 0.08 309.4)
-
Step 400
400
#B989DD
oklch(70.8% 0.129 309.7)
-
Step 500
500
#A769D3
oklch(63.1% 0.164 309.5)
-
Step 600
600
#934DC0
oklch(55.6% 0.179 309.9)
-
Step 700
700
#7D3DA6
oklch(49.1% 0.167 309.7)
-
Step 800
800 (this color)
#683689
oklch(43.6% 0.138 309.6)
-
Step 900
900
#532E6C
oklch(37.8% 0.108 309.7)
-
Step 950
950
#301C3F
oklch(27% 0.067 309)
#683689 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) | #174B8C | 0.119 |
| Deuteranopia (no green cones) | #2C4E87 | 0.106 |
| Tritanopia (no blue cones) | #64465A | 0.097 |
| Achromatopsia (no color) | #4D4D4D | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #683689
#683689
oklch(43.6% 0.138 309.6)
- #3C5D00
#3C5D00
oklch(43.6% 0.116 129.5)
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 #683689, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.028
- Dark Slate Blue #483D8B ΔE 0.059
- Blueberry #464196 ΔE 0.066
- Twilight #4E518B ΔE 0.077
- Purple #800080 ΔE 0.078
- Light Eggplant #894585 ΔE 0.079
- Dark Magenta #8B008B ΔE 0.088
- Dusk #4E5481 ΔE 0.089
Use #683689 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.