#6C51AE
Closest named color: Iris (#6258C4). oklch(50.9% 0.143 294.1), rgb(108, 81, 174).
Aa
White text reads best on this color (6.12:1).
About this color
#6C51AE is a medium-dark, vivid purple. In OKLCH its lightness is 51%, its chroma 0.143 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.039 away. White text reads best on it, at 6.12:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.42:1 |
| White text | 6.12:1 |
Values
| HEX | #6C51AE |
| RGB | rgb(108, 81, 174) |
| HSL | hsl(257, 36%, 50%) |
| OKLCH | oklch(50.9% 0.143 294.1) |
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 #6C51AE | 6.12:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #6C51AE | 3.42:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #6C51AE text on white | 6.12:1 | AA | Lc 80.4 | Fine for body text |
| #6C51AE text on black | 3.42:1 | AA large text | Lc -21.5 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DAD5F1
oklch(88.6% 0.038 293.8)
-
Step 300
300
#C3B9EA
oklch(81% 0.069 294.2)
-
Step 400
400
#A493DF
oklch(70.7% 0.11 293.7)
-
Step 500
500
#8F76D6
oklch(63.1% 0.142 293.9)
-
Step 600
600
#7A5DC3
oklch(55.6% 0.153 293.9)
-
Step 700
700 (this color)
#6C51AE
oklch(50.9% 0.143 294.1)
-
Step 800
800
#543F88
oklch(42.7% 0.117 294.1)
-
Step 900
900
#45366D
oklch(37.7% 0.092 294.1)
-
Step 950
950
#282040
oklch(27% 0.059 293.6)
#6C51AE 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) | #2A63B1 | 0.089 |
| Deuteranopia (no green cones) | #3060AC | 0.084 |
| Tritanopia (no blue cones) | #5C6478 | 0.114 |
| Achromatopsia (no color) | #626262 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C51AE
#6C51AE
oklch(50.9% 0.143 294.1)
- #656C00
#656C00
oklch(50.8% 0.114 114.2)
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 #6C51AE, closest first.
No curated palette has a color within ΔE 0.04 of #6C51AE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.039
- Slate Blue #6A5ACD ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.054
- Bluey Purple #6241C7 ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.061
- Deep Lavender #8D5EB7 ΔE 0.069
- Rebecca Purple #663399 ΔE 0.075
- Twilight #4E518B ΔE 0.075
Use #6C51AE 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.