#613B9B
Closest named color: Rebecca Purple (#663399). oklch(44.8% 0.15 298.3), rgb(97, 59, 155).
Aa
White text reads best on this color (8.05:1).
About this color
#613B9B is a dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.150 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 0.018 away. White text reads best on it, at 8.05:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.60:1 |
| White text | 8.05:1 |
Values
| HEX | #613B9B |
| RGB | rgb(97, 59, 155) |
| HSL | hsl(264, 45%, 42%) |
| OKLCH | oklch(44.8% 0.15 298.3) |
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 #613B9B | 8.05:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #613B9B | 2.60:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #613B9B text on white | 8.05:1 | AAA | Lc 87.5 | Fine for body text |
| #613B9B text on black | 2.60:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE7F9
oklch(93.7% 0.025 298.6)
-
Step 200
200
#DDD3F6
oklch(88.6% 0.049 298.5)
-
Step 300
300
#C7B5F2
oklch(80.9% 0.087 298)
-
Step 400
400
#AC8BEC
oklch(70.6% 0.141 298.4)
-
Step 500
500
#996BE6
oklch(63.1% 0.18 298.3)
-
Step 600
600
#844FD4
oklch(55.6% 0.196 298.1)
-
Step 700
700
#703FB7
oklch(49.1% 0.181 298.2)
-
Step 800
800 (this color)
#613B9B
oklch(44.8% 0.15 298.3)
-
Step 900
900
#4B2F76
oklch(37.7% 0.117 298.8)
-
Step 950
950
#2C1C45
oklch(26.9% 0.075 299.4)
#613B9B 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) | #00509E | 0.109 |
| Deuteranopia (no green cones) | #144F99 | 0.103 |
| Tritanopia (no blue cones) | #545065 | 0.116 |
| Achromatopsia (no color) | #505050 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613B9B
#613B9B
oklch(44.8% 0.15 298.3)
- #505C00
#505C00
oklch(44.9% 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 #613B9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.018
- Blueberry #464196 ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.051
- Twilight #4E518B ΔE 0.069
- Bluey Purple #6241C7 ΔE 0.071
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
- Chrysanthemum #560BAD ΔE 0.080
- Grape #7209B7 ΔE 0.080
Use #613B9B 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.