#613F7E
Closest named color: Dark Slate Blue (#483D8B). oklch(43.5% 0.106 307.5), rgb(97, 63, 126).
Aa
White text reads best on this color (8.33:1).
About this color
#613F7E is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.106 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.051 away. White text reads best on it, at 8.33:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.52:1 |
| White text | 8.33:1 |
Values
| HEX | #613F7E |
| RGB | rgb(97, 63, 126) |
| HSL | hsl(272, 33%, 37%) |
| OKLCH | oklch(43.5% 0.106 307.5) |
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 #613F7E | 8.33:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #613F7E | 2.52:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #613F7E text on white | 8.33:1 | AAA | Lc 88.6 | Fine for body text |
| #613F7E text on black | 2.52:1 | Fails | Lc -13.6 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#DFD4EB
oklch(88.6% 0.033 307.1)
-
Step 300
300
#CBB7E0
oklch(81% 0.061 307.1)
-
Step 400
400
#B190D1
oklch(70.7% 0.099 307.2)
-
Step 500
500
#9E73C5
oklch(63.1% 0.127 307.3)
-
Step 600
600
#895AB1
oklch(55.6% 0.138 307.4)
-
Step 700
700
#744998
oklch(49% 0.129 307.4)
-
Step 800
800 (this color)
#613F7E
oklch(43.5% 0.106 307.5)
-
Step 900
900
#4D3463
oklch(37.6% 0.083 307.4)
-
Step 950
950
#2D1F3A
oklch(27% 0.052 307.1)
#613F7E 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) | #2E4D80 | 0.082 |
| Deuteranopia (no green cones) | #384E7C | 0.074 |
| Tritanopia (no blue cones) | #5D4A58 | 0.078 |
| Achromatopsia (no color) | #4E4E4E | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613F7E
#613F7E
oklch(43.5% 0.106 307.5)
- #415B0C
#415B0C
oklch(43.5% 0.106 127.1)
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 #613F7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Rebecca Purple #663399 ΔE 0.055
- Twilight #4E518B ΔE 0.055
- Blueberry #464196 ΔE 0.061
- Dusk #4E5481 ΔE 0.062
- Dusty Grape #545775 ΔE 0.074
- Light Eggplant #894585 ΔE 0.080
- Denim Blue #3B5B92 ΔE 0.090
Use #613F7E 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.