#683591
Closest named color: Rebecca Purple (#663399). oklch(44% 0.149 306.8), rgb(104, 53, 145).
Aa
White text reads best on this color (8.37:1).
About this color
#683591 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.149 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.015 away. White text reads best on it, at 8.37:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.50:1 |
| White text | 8.37:1 |
Values
| HEX | #683591 |
| RGB | rgb(104, 53, 145) |
| HSL | hsl(273, 46%, 39%) |
| OKLCH | oklch(44% 0.149 306.8) |
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 #683591 | 8.37:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #683591 | 2.50:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #683591 text on white | 8.37:1 | AAA | Lc 88.4 | Fine for body text |
| #683591 text on black | 2.50:1 | Fails | Lc -13.8 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EEE6F7
oklch(93.6% 0.024 307)
-
Step 200
200
#E1D1F3
oklch(88.4% 0.049 306.6)
-
Step 300
300
#CFB2ED
oklch(80.8% 0.087 306.9)
-
Step 400
400
#B788E4
oklch(70.7% 0.139 306.7)
-
Step 500
500
#A667DC
oklch(63.2% 0.177 306.9)
-
Step 600
600
#914AC9
oklch(55.6% 0.193 306.9)
-
Step 700
700
#7C3AAE
oklch(49.1% 0.18 307.1)
-
Step 800
800 (this color)
#683591
oklch(44% 0.149 306.8)
-
Step 900
900
#522D71
oklch(37.8% 0.116 306.8)
-
Step 950
950
#301B42
oklch(27% 0.073 307)
#683591 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) | #024C94 | 0.127 |
| Deuteranopia (no green cones) | #234E8F | 0.113 |
| Tritanopia (no blue cones) | #61485E | 0.107 |
| Achromatopsia (no color) | #4E4E4E | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #683591
#683591
oklch(44% 0.149 306.8)
- #425D00
#425D00
oklch(44% 0.113 126.7)
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 #683591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.015
- Dark Slate Blue #483D8B ΔE 0.060
- Blueberry #464196 ΔE 0.064
- Purple #800080 ΔE 0.080
- Grape #7209B7 ΔE 0.080
- Twilight #4E518B ΔE 0.080
- Light Eggplant #894585 ΔE 0.083
- Chrysanthemum #560BAD ΔE 0.086
Use #683591 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.