#6B57A5
Closest named color: Iris (#6258C4). oklch(51.3% 0.121 293.5), rgb(107, 87, 165).
Aa
White text reads best on this color (5.94:1).
About this color
#6B57A5 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.121 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.051 away. White text reads best on it, at 5.94:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #6B57A5 |
| RGB | rgb(107, 87, 165) |
| HSL | hsl(255, 31%, 49%) |
| OKLCH | oklch(51.3% 0.121 293.5) |
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 #6B57A5 | 5.94:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #6B57A5 | 3.53:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #6B57A5 text on white | 5.94:1 | AA | Lc 79.6 | Fine for body text |
| #6B57A5 text on black | 3.53:1 | AA large text | Lc -22.2 | 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 700.
-
Step 50
50
#F5F4FA
oklch(97% 0.008 293.9)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#DAD6ED
oklch(88.6% 0.032 293.7)
-
Step 300
300
#C2BAE4
oklch(80.9% 0.059 293.8)
-
Step 400
400
#A395D6
oklch(70.6% 0.095 293.7)
-
Step 500
500
#8D7ACB
oklch(63.1% 0.12 293.4)
-
Step 600
600
#7862B7
oklch(55.6% 0.129 293.7)
-
Step 700
700 (this color)
#6B57A5
oklch(51.3% 0.121 293.5)
-
Step 800
800
#524280
oklch(42.6% 0.101 293.6)
-
Step 900
900
#443967
oklch(37.8% 0.077 293.3)
-
Step 950
950
#28213C
oklch(26.9% 0.05 294.8)
#6B57A5 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) | #3C65A8 | 0.069 |
| Deuteranopia (no green cones) | #3F62A3 | 0.065 |
| Tritanopia (no blue cones) | #5D6676 | 0.098 |
| Achromatopsia (no color) | #646464 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B57A5
#6B57A5
oklch(51.3% 0.121 293.5)
- #676D00
#676D00
oklch(51.2% 0.115 113.5)
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 #6B57A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.051
- Slate Blue #6A5ACD ΔE 0.062
- Muted Purple #805B87 ΔE 0.063
- Dusky Blue #475F94 ΔE 0.064
- Twilight #4E518B ΔE 0.065
- Light Indigo #6D5ACF ΔE 0.065
- Deep Lavender #8D5EB7 ΔE 0.067
- Dark Periwinkle #665FD1 ΔE 0.069
Use #6B57A5 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.