#6F55C9
Closest named color: Slate Blue (#6A5ACD). oklch(53.7% 0.173 289.6), rgb(111, 85, 201).
Aa
White text reads best on this color (5.49:1).
About this color
#6F55C9 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.173 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.014 away. White text reads best on it, at 5.49:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.81:1 |
| White text | 5.49:1 |
Values
| HEX | #6F55C9 |
| RGB | rgb(111, 85, 201) |
| HSL | hsl(253, 52%, 56%) |
| OKLCH | oklch(53.7% 0.173 289.6) |
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 #6F55C9 | 5.49:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #6F55C9 | 3.81:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #6F55C9 text on white | 5.49:1 | AA | Lc 77.1 | Fine for body text |
| #6F55C9 text on black | 3.81:1 | AA large text | Lc -24.6 | 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
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F5
oklch(88.5% 0.044 289.8)
-
Step 300
300
#BFB9F0
oklch(80.9% 0.077 289.6)
-
Step 400
400
#9F92E9
oklch(70.6% 0.126 289.6)
-
Step 500
500
#8975E2
oklch(63.1% 0.159 289.5)
-
Step 600
600 (this color)
#6F55C9
oklch(53.7% 0.173 289.6)
-
Step 700
700
#624AB4
oklch(49.1% 0.161 289.6)
-
Step 800
800
#503D91
oklch(42.6% 0.133 290)
-
Step 900
900
#423574
oklch(37.7% 0.104 290)
-
Step 950
950
#262044
oklch(27% 0.065 288.9)
#6F55C9 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) | #016BCD | 0.104 |
| Deuteranopia (no green cones) | #0B66C7 | 0.101 |
| Tritanopia (no blue cones) | #546F87 | 0.141 |
| Achromatopsia (no color) | #696969 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6F55C9
#6F55C9
oklch(53.7% 0.173 289.6)
- #737300
#737300
oklch(53.8% 0.117 109.8)
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 #6F55C9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.014
- Light Indigo #6D5ACF ΔE 0.014
- Iris #6258C4 ΔE 0.023
- Dark Periwinkle #665FD1 ΔE 0.027
- Bluey Purple #6241C7 ΔE 0.051
- Purpley #8756E4 ΔE 0.057
- Warm Blue #4B57DB ΔE 0.060
- Deep Lavender #8D5EB7 ΔE 0.066
Use #6F55C9 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.