#615BDA
Closest named color: Dark Periwinkle (#665FD1). oklch(54.8% 0.188 280.3), rgb(97, 91, 218).
Aa
White text reads best on this color (5.22:1).
About this color
#615BDA is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.188 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.019 away. White text reads best on it, at 5.22:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #615BDA |
| RGB | rgb(97, 91, 218) |
| HSL | hsl(243, 63%, 61%) |
| OKLCH | oklch(54.8% 0.188 280.3) |
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 #615BDA | 5.22:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #615BDA | 4.01:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #615BDA text on white | 5.22:1 | AA | Lc 75.5 | Fine for body text |
| #615BDA text on black | 4.01:1 | AA large text | Lc -26.2 | 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
#E6E8FB
oklch(93.5% 0.026 281.1)
-
Step 200
200
#D3D6F8
oklch(88.5% 0.047 281.4)
-
Step 300
300
#B6BBF7
oklch(80.9% 0.085 280.6)
-
Step 400
400
#9195F3
oklch(70.6% 0.136 280.4)
-
Step 500
500
#7878EE
oklch(63% 0.173 280.2)
-
Step 600
600 (this color)
#615BDA
oklch(54.8% 0.188 280.3)
-
Step 700
700
#534CC0
oklch(49.1% 0.176 280.4)
-
Step 800
800
#433F9B
oklch(42.6% 0.145 280.2)
-
Step 900
900
#38377B
oklch(37.7% 0.113 280.2)
-
Step 950
950
#212148
oklch(27.1% 0.071 280.6)
#615BDA 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) | #0071DE | 0.082 |
| Deuteranopia (no green cones) | #0068D7 | 0.078 |
| Tritanopia (no blue cones) | #237992 | 0.161 |
| Achromatopsia (no color) | #6C6C6C | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #615BDA
#615BDA
oklch(54.8% 0.188 280.3)
- #807200
#807200
oklch(54.8% 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 #615BDA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.019
- Slate Blue #6A5ACD ΔE 0.024
- Light Indigo #6D5ACF ΔE 0.025
- Warm Blue #4B57DB ΔE 0.033
- Iris #6258C4 ΔE 0.034
- Royal Blue #4169E1 ΔE 0.047
- Neon Blue #4361EE ΔE 0.048
- Medium Slate Blue #7B68EE ΔE 0.060
Use #615BDA 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.