#6D57CE
Closest named color: Light Indigo (#6D5ACF). oklch(54.2% 0.176 287.5), rgb(109, 87, 206).
Aa
White text reads best on this color (5.37:1).
About this color
#6D57CE is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.176 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Light Indigo (#6D5ACF), ΔE 0.007 away. White text reads best on it, at 5.37:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Light Indigo (#6D5ACF) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #6D57CE |
| RGB | rgb(109, 87, 206) |
| HSL | hsl(251, 55%, 57%) |
| OKLCH | oklch(54.2% 0.176 287.5) |
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 #6D57CE | 5.37:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #6D57CE | 3.90:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #6D57CE text on white | 5.37:1 | AA | Lc 76.4 | Fine for body text |
| #6D57CE 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
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D7D5F6
oklch(88.5% 0.045 288.2)
-
Step 300
300
#BDB9F2
oklch(80.9% 0.08 287.7)
-
Step 400
400
#9C93EB
oklch(70.7% 0.127 287.4)
-
Step 500
500
#8676E5
oklch(63.2% 0.162 287.4)
-
Step 600
600 (this color)
#6D57CE
oklch(54.2% 0.176 287.5)
-
Step 700
700
#5F4AB7
oklch(49.1% 0.165 287.6)
-
Step 800
800
#4D3E94
oklch(42.7% 0.136 287.2)
-
Step 900
900
#403676
oklch(37.8% 0.105 287.4)
-
Step 950
950
#252045
oklch(27% 0.067 287.2)
#6D57CE 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) | #006DD2 | 0.100 |
| Deuteranopia (no green cones) | #0067CB | 0.099 |
| Tritanopia (no blue cones) | #4D728A | 0.147 |
| Achromatopsia (no color) | #6A6A6A | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D57CE
#6D57CE
oklch(54.2% 0.176 287.5)
- #777300
#777300
oklch(54.2% 0.116 107.3)
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 #6D57CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Indigo #6D5ACF ΔE 0.007
- Slate Blue #6A5ACD ΔE 0.008
- Dark Periwinkle #665FD1 ΔE 0.020
- Iris #6258C4 ΔE 0.023
- Warm Blue #4B57DB ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.054
- Purpley #8756E4 ΔE 0.054
- Medium Slate Blue #7B68EE ΔE 0.065
Use #6D57CE 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.