#613A77
Closest named color: Dark Slate Blue (#483D8B). oklch(42.2% 0.106 312.2), rgb(97, 58, 119).
Aa
White text reads best on this color (8.82:1).
About this color
#613A77 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.106 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.056 away. White text reads best on it, at 8.82:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.37:1 |
| White text | 8.82:1 |
Values
| HEX | #613A77 |
| RGB | rgb(97, 58, 119) |
| HSL | hsl(278, 34%, 35%) |
| OKLCH | oklch(42.2% 0.106 312.2) |
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 #613A77 | 8.82:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #613A77 | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #613A77 text on white | 8.82:1 | AAA | Lc 89.9 | Fine for body text |
| #613A77 text on black | 2.37:1 | Fails | Lc -12.3 | 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
#EEE7F3
oklch(93.7% 0.018 311.6)
-
Step 200
200
#E1D3EA
oklch(88.5% 0.035 312.4)
-
Step 300
300
#CEB6DE
oklch(80.9% 0.061 311.8)
-
Step 400
400
#B68ECE
oklch(70.7% 0.101 312.4)
-
Step 500
500
#A371C1
oklch(63.1% 0.128 311.9)
-
Step 600
600
#8E58AD
oklch(55.6% 0.138 312)
-
Step 700
700
#794894
oklch(49.1% 0.127 312.3)
-
Step 800
800 (this color)
#613A77
oklch(42.2% 0.106 312.2)
-
Step 900
900
#503361
oklch(37.6% 0.083 312)
-
Step 950
950
#2F1E39
oklch(26.9% 0.053 312.1)
#613A77 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) | #2C4879 | 0.088 |
| Deuteranopia (no green cones) | #374B75 | 0.079 |
| Tritanopia (no blue cones) | #5F4453 | 0.073 |
| Achromatopsia (no color) | #4A4A4A | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613A77
#613A77
oklch(42.2% 0.106 312.2)
- #375911
#375911
oklch(42.2% 0.106 132)
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 #613A77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.056
- Rebecca Purple #663399 ΔE 0.060
- Twilight #4E518B ΔE 0.068
- Blueberry #464196 ΔE 0.069
- Dusk #4E5481 ΔE 0.073
- Dusty Grape #545775 ΔE 0.083
- Light Eggplant #894585 ΔE 0.086
- Brownish Purple #76424E ΔE 0.089
Use #613A77 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.