#615BD5
Closest named color: Dark Periwinkle (#665FD1). oklch(54.4% 0.182 280.7), rgb(97, 91, 213).
Aa
White text reads best on this color (5.29:1).
About this color
#615BD5 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.182 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.015 away. White text reads best on it, at 5.29:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #615BD5 |
| RGB | rgb(97, 91, 213) |
| HSL | hsl(243, 59%, 60%) |
| OKLCH | oklch(54.4% 0.182 280.7) |
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 #615BD5 | 5.29:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #615BD5 | 3.96:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #615BD5 text on white | 5.29:1 | AA | Lc 76.0 | Fine for body text |
| #615BD5 text on black | 3.96:1 | AA large text | Lc -25.8 | Dividers and decoration only |
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 600.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E8FA
oklch(93.5% 0.024 280.9)
-
Step 200
200
#D3D6F7
oklch(88.4% 0.045 281.3)
-
Step 300
300
#B6BBF5
oklch(80.8% 0.082 280.6)
-
Step 400
400
#9296F0
oklch(70.7% 0.131 280.6)
-
Step 500
500
#7979EB
oklch(63.1% 0.167 280.5)
-
Step 600
600 (this color)
#615BD5
oklch(54.4% 0.182 280.7)
-
Step 700
700
#544DBC
oklch(49.1% 0.169 281)
-
Step 800
800
#444098
oklch(42.6% 0.14 280.7)
-
Step 900
900
#393779
oklch(37.6% 0.109 281.1)
-
Step 950
950
#212147
oklch(27% 0.069 280.7)
#615BD5 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) | #0070D9 | 0.082 |
| Deuteranopia (no green cones) | #0067D2 | 0.078 |
| Tritanopia (no blue cones) | #2A788F | 0.157 |
| Achromatopsia (no color) | #6B6B6B | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #615BD5
#615BD5
oklch(54.4% 0.182 280.7)
- #7F7100
#7F7100
oklch(54.5% 0.114 100.8)
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 #615BD5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.015
- Slate Blue #6A5ACD ΔE 0.018
- Light Indigo #6D5ACF ΔE 0.020
- Iris #6258C4 ΔE 0.027
- Warm Blue #4B57DB ΔE 0.034
- Royal Blue #4169E1 ΔE 0.049
- Neon Blue #4361EE ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.059
Use #615BD5 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.