#683B8F
Closest named color: Rebecca Purple (#663399). oklch(44.7% 0.137 306.4), rgb(104, 59, 143).
Aa
White text reads best on this color (8.04:1).
About this color
#683B8F is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.137 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.026 away. White text reads best on it, at 8.04:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.61:1 |
| White text | 8.04:1 |
Values
| HEX | #683B8F |
| RGB | rgb(104, 59, 143) |
| HSL | hsl(272, 42%, 40%) |
| OKLCH | oklch(44.7% 0.137 306.4) |
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 #683B8F | 8.04:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #683B8F | 2.61:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #683B8F text on white | 8.04:1 | AAA | Lc 87.5 | Fine for body text |
| #683B8F text on black | 2.61:1 | Fails | Lc -14.6 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E0D2F1
oklch(88.5% 0.045 305.9)
-
Step 300
300
#CEB4EA
oklch(81% 0.08 306.6)
-
Step 400
400
#B58ADF
oklch(70.6% 0.128 306.6)
-
Step 500
500
#A36BD6
oklch(63.2% 0.163 306.5)
-
Step 600
600
#8E4FC3
oklch(55.5% 0.178 306.5)
-
Step 700
700
#793FA9
oklch(49.1% 0.166 306.4)
-
Step 800
800 (this color)
#683B8F
oklch(44.7% 0.137 306.4)
-
Step 900
900
#502F6D
oklch(37.6% 0.107 306.5)
-
Step 950
950
#2F1C40
oklch(27% 0.068 306.8)
#683B8F 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) | #1B4F92 | 0.112 |
| Deuteranopia (no green cones) | #2D508D | 0.099 |
| Tritanopia (no blue cones) | #624B5F | 0.099 |
| Achromatopsia (no color) | #505050 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #683B8F
#683B8F
oklch(44.7% 0.137 306.4)
- #445F00
#445F00
oklch(44.7% 0.114 126.4)
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 #683B8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.026
- Dark Slate Blue #483D8B ΔE 0.058
- Blueberry #464196 ΔE 0.061
- Twilight #4E518B ΔE 0.069
- Light Eggplant #894585 ΔE 0.074
- Dusk #4E5481 ΔE 0.082
- Purple #800080 ΔE 0.088
- Warm Purple #952E8F ΔE 0.088
Use #683B8F 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.