#613E8F
Closest named color: Rebecca Purple (#663399). oklch(44.4% 0.13 301.2), rgb(97, 62, 143).
Aa
White text reads best on this color (8.09:1).
About this color
#613E8F is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.130 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 0.031 away. White text reads best on it, at 8.09:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.59:1 |
| White text | 8.09:1 |
Values
| HEX | #613E8F |
| RGB | rgb(97, 62, 143) |
| HSL | hsl(266, 40%, 40%) |
| OKLCH | oklch(44.4% 0.13 301.2) |
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 #613E8F | 8.09:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #613E8F | 2.59:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #613E8F text on white | 8.09:1 | AAA | Lc 87.7 | Fine for body text |
| #613E8F text on black | 2.59:1 | Fails | Lc -14.4 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F7
oklch(93.7% 0.022 300.2)
-
Step 200
200
#DED3F1
oklch(88.5% 0.042 302.2)
-
Step 300
300
#C9B6EB
oklch(81% 0.076 301.1)
-
Step 400
400
#AE8EE0
oklch(70.7% 0.121 301.3)
-
Step 500
500
#9B6FD7
oklch(63.1% 0.156 301.6)
-
Step 600
600
#8655C5
oklch(55.7% 0.17 301.3)
-
Step 700
700
#7145AA
oklch(49.1% 0.157 300.9)
-
Step 800
800 (this color)
#613E8F
oklch(44.4% 0.13 301.2)
-
Step 900
900
#4B326E
oklch(37.6% 0.101 300.9)
-
Step 950
950
#2C1E40
oklch(27% 0.063 301.3)
#613E8F 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) | #1E4F92 | 0.096 |
| Deuteranopia (no green cones) | #2A4F8D | 0.087 |
| Tritanopia (no blue cones) | #584E60 | 0.099 |
| Achromatopsia (no color) | #505050 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613E8F
#613E8F
oklch(44.4% 0.13 301.2)
- #4B5C00
#4B5C00
oklch(44.4% 0.107 121.3)
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 #613E8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.031
- Dark Slate Blue #483D8B ΔE 0.045
- Blueberry #464196 ΔE 0.048
- Twilight #4E518B ΔE 0.057
- Dusk #4E5481 ΔE 0.072
- Light Eggplant #894585 ΔE 0.083
- Bluey Purple #6241C7 ΔE 0.089
- Dusty Grape #545775 ΔE 0.089
Use #613E8F 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.