#613D9B
Closest named color: Rebecca Purple (#663399). oklch(45.1% 0.147 297.9), rgb(97, 61, 155).
Aa
White text reads best on this color (7.92:1).
About this color
#613D9B is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.147 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.022 away. White text reads best on it, at 7.92:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #613D9B |
| RGB | rgb(97, 61, 155) |
| HSL | hsl(263, 44%, 42%) |
| OKLCH | oklch(45.1% 0.147 297.9) |
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 #613D9B | 7.92:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #613D9B | 2.64:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #613D9B text on white | 7.92:1 | AAA | Lc 87.1 | Fine for body text |
| #613D9B text on black | 2.64:1 | Fails | Lc -15.0 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DCD3F5
oklch(88.5% 0.047 297.5)
-
Step 300
300
#C7B5F2
oklch(80.9% 0.087 298)
-
Step 400
400
#AB8CEB
oklch(70.6% 0.138 297.8)
-
Step 500
500
#986CE4
oklch(63% 0.176 298.1)
-
Step 600
600
#8351D2
oklch(55.6% 0.19 297.7)
-
Step 700
700
#6F40B6
oklch(49% 0.178 297.8)
-
Step 800
800 (this color)
#613D9B
oklch(45.1% 0.147 297.9)
-
Step 900
900
#4A3075
oklch(37.7% 0.114 298.1)
-
Step 950
950
#2B1D45
oklch(27% 0.073 297.5)
#613D9B 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) | #01519E | 0.107 |
| Deuteranopia (no green cones) | #185099 | 0.100 |
| Tritanopia (no blue cones) | #545166 | 0.113 |
| Achromatopsia (no color) | #515151 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613D9B
#613D9B
oklch(45.1% 0.147 297.9)
- #515D00
#515D00
oklch(45.2% 0.105 118.1)
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 #613D9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.022
- Blueberry #464196 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.051
- Twilight #4E518B ΔE 0.066
- Bluey Purple #6241C7 ΔE 0.070
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
- Blurple #5539CC ΔE 0.082
- Dusk #4E5481 ΔE 0.083
Use #613D9B 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.