#613C70
Closest named color: Dark Slate Blue (#483D8B). oklch(42.2% 0.094 315.6), rgb(97, 60, 112).
Aa
White text reads best on this color (8.79:1).
About this color
#613C70 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.094 and its hue 316°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.064 away. White text reads best on it, at 8.79:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #613C70 |
| RGB | rgb(97, 60, 112) |
| HSL | hsl(283, 30%, 34%) |
| OKLCH | oklch(42.2% 0.094 315.6) |
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 #613C70 | 8.79:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #613C70 | 2.38:1 | Fails | Lc 14.1 | Not readable |
| #613C70 text on white | 8.79:1 | AAA | Lc 89.9 | Fine for body text |
| #613C70 text on black | 2.38:1 | Fails | Lc -12.4 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F1
oklch(93.6% 0.015 316)
-
Step 200
200
#E1D3E7
oklch(88.4% 0.031 315.9)
-
Step 300
300
#CFB6D9
oklch(80.9% 0.056 316.3)
-
Step 400
400
#B690C6
oklch(70.7% 0.088 315.7)
-
Step 500
500
#A474B7
oklch(63.2% 0.111 316)
-
Step 600
600
#8E5BA3
oklch(55.5% 0.121 315.5)
-
Step 700
700
#794A8C
oklch(49% 0.114 315.6)
-
Step 800
800 (this color)
#613C70
oklch(42.2% 0.094 315.6)
-
Step 900
900
#50355C
oklch(37.7% 0.073 314.9)
-
Step 950
950
#2F1F36
oklch(27% 0.047 315.2)
#613C70 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) | #334872 | 0.078 |
| Deuteranopia (no green cones) | #3C4C6F | 0.073 |
| Tritanopia (no blue cones) | #604350 | 0.063 |
| Achromatopsia (no color) | #4B4B4B | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613C70
#613C70
oklch(42.2% 0.094 315.6)
- #355920
#355920
oklch(42.3% 0.095 135.6)
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 #613C70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.064
- Twilight #4E518B ΔE 0.069
- Dusk #4E5481 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.074
- Dusty Grape #545775 ΔE 0.076
- Brownish Purple #76424E ΔE 0.077
- Blueberry #464196 ΔE 0.078
- Purple Brown #673A3F ΔE 0.082
Use #613C70 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.