#6F57CB
Closest named color: Light Indigo (#6D5ACF). oklch(54.1% 0.172 288.8), rgb(111, 87, 203).
Aa
White text reads best on this color (5.38:1).
About this color
#6F57CB is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.172 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Light Indigo (#6D5ACF), ΔE 0.009 away. White text reads best on it, at 5.38:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Light Indigo (#6D5ACF) |
| Black text | 3.90:1 |
| White text | 5.38:1 |
Values
| HEX | #6F57CB |
| RGB | rgb(111, 87, 203) |
| HSL | hsl(252, 53%, 57%) |
| OKLCH | oklch(54.1% 0.172 288.8) |
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 #6F57CB | 5.38:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #6F57CB | 3.90:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #6F57CB text on white | 5.38:1 | AA | Lc 76.5 | Fine for body text |
| #6F57CB text on black | 3.90:1 | AA large text | Lc -25.3 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D5F5
oklch(88.5% 0.044 288.3)
-
Step 300
300
#BEB9F0
oklch(80.9% 0.077 288.7)
-
Step 400
400
#9E93E9
oklch(70.7% 0.124 288.7)
-
Step 500
500
#8876E2
oklch(63.2% 0.158 288.7)
-
Step 600
600 (this color)
#6F57CB
oklch(54.1% 0.172 288.8)
-
Step 700
700
#614AB4
oklch(49% 0.161 289.1)
-
Step 800
800
#4F3E92
oklch(42.8% 0.133 288.8)
-
Step 900
900
#413674
oklch(37.8% 0.102 288.7)
-
Step 950
950
#262044
oklch(27% 0.065 288.9)
#6F57CB 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) | #076DCF | 0.101 |
| Deuteranopia (no green cones) | #0E67C9 | 0.099 |
| Tritanopia (no blue cones) | #537188 | 0.143 |
| Achromatopsia (no color) | #6A6A6A | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6F57CB
#6F57CB
oklch(54.1% 0.172 288.8)
- #757400
#757400
oklch(54.2% 0.118 109.2)
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 #6F57CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Indigo #6D5ACF ΔE 0.009
- Slate Blue #6A5ACD ΔE 0.010
- Dark Periwinkle #665FD1 ΔE 0.023
- Iris #6258C4 ΔE 0.023
- Bluey Purple #6241C7 ΔE 0.055
- Purpley #8756E4 ΔE 0.055
- Warm Blue #4B57DB ΔE 0.058
- Deep Lavender #8D5EB7 ΔE 0.065
Use #6F57CB 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.