#6A51C5
Closest named color: Iris (#6258C4). oklch(52.3% 0.173 288.9), rgb(106, 81, 197).
Aa
White text reads best on this color (5.83:1).
About this color
#6A51C5 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.173 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.019 away. White text reads best on it, at 5.83:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.59:1 |
| White text | 5.83:1 |
Values
| HEX | #6A51C5 |
| RGB | rgb(106, 81, 197) |
| HSL | hsl(253, 50%, 55%) |
| OKLCH | oklch(52.3% 0.173 288.9) |
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 #6A51C5 | 5.83:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #6A51C5 | 3.59:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #6A51C5 text on white | 5.83:1 | AA | Lc 78.8 | Fine for body text |
| #6A51C5 text on black | 3.59:1 | AA large text | Lc -22.9 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E8FA
oklch(93.7% 0.024 288.5)
-
Step 200
200
#D7D5F7
oklch(88.5% 0.047 288.1)
-
Step 300
300
#BEB8F4
oklch(80.8% 0.084 288.9)
-
Step 400
400
#9E91EE
oklch(70.6% 0.134 288.9)
-
Step 500
500
#8873E9
oklch(63.1% 0.171 288.7)
-
Step 600
600
#7458D7
oklch(55.6% 0.186 289)
-
Step 700
700 (this color)
#6A51C5
oklch(52.3% 0.173 288.9)
-
Step 800
800
#4F3B97
oklch(42.6% 0.144 288.8)
-
Step 900
900
#413478
oklch(37.7% 0.112 288.7)
-
Step 950
950
#261F46
oklch(27% 0.07 289.1)
#6A51C5 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) | #0067C9 | 0.101 |
| Deuteranopia (no green cones) | #0062C3 | 0.100 |
| Tritanopia (no blue cones) | #4D6B83 | 0.142 |
| Achromatopsia (no color) | #656565 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A51C5
#6A51C5
oklch(52.3% 0.173 288.9)
- #6F6E00
#6F6E00
oklch(52.2% 0.113 109.1)
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 #6A51C5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.019
- Slate Blue #6A5ACD ΔE 0.023
- Light Indigo #6D5ACF ΔE 0.026
- Dark Periwinkle #665FD1 ΔE 0.036
- Bluey Purple #6241C7 ΔE 0.039
- Warm Blue #4B57DB ΔE 0.057
- Blue With A Hint Of Purple #533CC6 ΔE 0.063
- Blurple #5539CC ΔE 0.065
Use #6A51C5 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.