#6C57BF
Closest named color: Iris (#6258C4). oklch(53% 0.157 289.2), rgb(108, 87, 191).
Aa
White text reads best on this color (5.59:1).
About this color
#6C57BF is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.157 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.017 away. White text reads best on it, at 5.59:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #6C57BF |
| RGB | rgb(108, 87, 191) |
| HSL | hsl(252, 45%, 55%) |
| OKLCH | oklch(53% 0.157 289.2) |
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 #6C57BF | 5.59:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #6C57BF | 3.75:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #6C57BF text on white | 5.59:1 | AA | Lc 77.7 | Fine for body text |
| #6C57BF text on black | 3.75:1 | AA large text | Lc -24.1 | 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
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F2
oklch(88.4% 0.04 290.3)
-
Step 300
300
#BFBAEC
oklch(81% 0.07 289.3)
-
Step 400
400
#9F94E2
oklch(70.6% 0.113 289.7)
-
Step 500
500
#8878DA
oklch(63.1% 0.144 289.1)
-
Step 600
600 (this color)
#6C57BF
oklch(53% 0.157 289.2)
-
Step 700
700
#614EAC
oklch(49.2% 0.144 289.3)
-
Step 800
800
#4F408C
oklch(42.7% 0.121 289.3)
-
Step 900
900
#413770
oklch(37.7% 0.095 289.1)
-
Step 950
950
#262141
oklch(27.1% 0.058 289.1)
#6C57BF 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) | #236AC3 | 0.089 |
| Deuteranopia (no green cones) | #2565BD | 0.086 |
| Tritanopia (no blue cones) | #546D82 | 0.129 |
| Achromatopsia (no color) | #686868 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C57BF
#6C57BF
oklch(53% 0.157 289.2)
- #717100
#717100
oklch(53.1% 0.116 109.8)
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 #6C57BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.017
- Slate Blue #6A5ACD ΔE 0.022
- Light Indigo #6D5ACF ΔE 0.025
- Dark Periwinkle #665FD1 ΔE 0.033
- Bluey Purple #6241C7 ΔE 0.055
- Deep Lavender #8D5EB7 ΔE 0.063
- Warm Blue #4B57DB ΔE 0.065
- Purpley #8756E4 ΔE 0.072
Use #6C57BF 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.