#613F6B
Closest named color: Dusk (#4E5481). oklch(42.5% 0.082 318.3), rgb(97, 63, 107).
Aa
White text reads best on this color (8.63:1).
About this color
#613F6B is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.082 and its hue 318°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.066 away. White text reads best on it, at 8.63:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.43:1 |
| White text | 8.63:1 |
Values
| HEX | #613F6B |
| RGB | rgb(97, 63, 107) |
| HSL | hsl(286, 26%, 33%) |
| OKLCH | oklch(42.5% 0.082 318.3) |
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 #613F6B | 8.63:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #613F6B | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #613F6B text on white | 8.63:1 | AAA | Lc 89.5 | Fine for body text |
| #613F6B text on black | 2.43:1 | Fails | Lc -12.7 | 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
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#EEE7F0
oklch(93.6% 0.014 318.7)
-
Step 200
200
#E1D4E5
oklch(88.5% 0.027 318.2)
-
Step 300
300
#CEB7D5
oklch(80.8% 0.049 318.3)
-
Step 400
400
#B592C0
oklch(70.8% 0.076 318)
-
Step 500
500
#A276B0
oklch(63% 0.098 317.8)
-
Step 600
600
#8D5E9B
oklch(55.5% 0.106 318.2)
-
Step 700
700
#784D85
oklch(49.1% 0.1 318.1)
-
Step 800
800 (this color)
#613F6B
oklch(42.5% 0.082 318.3)
-
Step 900
900
#503657
oklch(37.6% 0.064 319)
-
Step 950
950
#2F2033
oklch(27% 0.04 319)
#613F6B 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) | #39496D | 0.069 |
| Deuteranopia (no green cones) | #414D6A | 0.064 |
| Tritanopia (no blue cones) | #614450 | 0.052 |
| Achromatopsia (no color) | #4C4C4C | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613F6B
#613F6B
oklch(42.5% 0.082 318.3)
- #37592B
#37592B
oklch(42.6% 0.082 138)
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 #613F6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.066
- Brownish Purple #76424E ΔE 0.066
- Dusty Grape #545775 ΔE 0.067
- Twilight #4E518B ΔE 0.069
- Dark Slate Blue #483D8B ΔE 0.072
- Purple Brown #673A3F ΔE 0.072
- Blueberry #464196 ΔE 0.085
- Rebecca Purple #663399 ΔE 0.085
Use #613F6B 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.