#6F51CC
Closest named color: Light Indigo (#6D5ACF). oklch(53.2% 0.182 290), rgb(111, 81, 204).
Aa
White text reads best on this color (5.63:1).
About this color
#6F51CC is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.182 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Indigo (#6D5ACF), ΔE 0.020 away. White text reads best on it, at 5.63:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.182) |
| Temperature | in between |
| Nearest name | Light Indigo (#6D5ACF) |
| Black text | 3.72:1 |
| White text | 5.63:1 |
Values
| HEX | #6F51CC |
| RGB | rgb(111, 81, 204) |
| HSL | hsl(255, 55%, 56%) |
| OKLCH | oklch(53.2% 0.182 290) |
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 #6F51CC | 5.63:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #6F51CC | 3.72:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #6F51CC text on white | 5.63:1 | AA | Lc 77.8 | Fine for body text |
| #6F51CC text on black | 3.72:1 | AA large text | Lc -24.0 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D8D5F6
oklch(88.6% 0.045 289.6)
-
Step 300
300
#BFB8F2
oklch(80.8% 0.081 290)
-
Step 400
400
#A091EC
oklch(70.7% 0.131 290.2)
-
Step 500
500
#8A73E6
oklch(63.1% 0.167 289.9)
-
Step 600
600 (this color)
#6F51CC
oklch(53.2% 0.182 290)
-
Step 700
700
#6348B8
oklch(49.2% 0.169 289.9)
-
Step 800
800
#513C95
oklch(42.8% 0.14 290.1)
-
Step 900
900
#423476
oklch(37.6% 0.109 289.9)
-
Step 950
950
#271F45
oklch(27% 0.069 290.8)
#6F51CC 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) | #006AD0 | 0.107 |
| Deuteranopia (no green cones) | #0064C9 | 0.106 |
| Tritanopia (no blue cones) | #526D87 | 0.148 |
| Achromatopsia (no color) | #676767 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6F51CC
#6F51CC
oklch(53.2% 0.182 290)
- #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 #6F51CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Indigo #6D5ACF ΔE 0.020
- Slate Blue #6A5ACD ΔE 0.021
- Iris #6258C4 ΔE 0.028
- Dark Periwinkle #665FD1 ΔE 0.034
- Bluey Purple #6241C7 ΔE 0.043
- Purpley #8756E4 ΔE 0.056
- Warm Blue #4B57DB ΔE 0.058
- Burple #6832E3 ΔE 0.068
Use #6F51CC 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.