#6655C1
Closest named color: Iris (#6258C4). oklch(52.3% 0.162 286.6), rgb(102, 85, 193).
Aa
White text reads best on this color (5.77:1).
About this color
#6655C1 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.162 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.010 away. White text reads best on it, at 5.77:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.63:1 |
| White text | 5.77:1 |
Values
| HEX | #6655C1 |
| RGB | rgb(102, 85, 193) |
| HSL | hsl(249, 47%, 55%) |
| OKLCH | oklch(52.3% 0.162 286.6) |
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 #6655C1 | 5.77:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #6655C1 | 3.63:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #6655C1 text on white | 5.77:1 | AA | Lc 78.6 | Fine for body text |
| #6655C1 text on black | 3.63:1 | AA large text | Lc -23.2 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D6D5F5
oklch(88.4% 0.044 286.9)
-
Step 300
300
#BCBAF2
oklch(81% 0.079 286.1)
-
Step 400
400
#9B94EB
oklch(70.8% 0.125 286.4)
-
Step 500
500
#8476E5
oklch(63% 0.162 286.5)
-
Step 600
600
#6F5CD2
oklch(55.5% 0.175 286.6)
-
Step 700
700 (this color)
#6655C1
oklch(52.3% 0.162 286.6)
-
Step 800
800
#4C3E94
oklch(42.7% 0.136 286.6)
-
Step 900
900
#3F3676
oklch(37.7% 0.106 286.6)
-
Step 950
950
#252045
oklch(27% 0.067 287.2)
#6655C1 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) | #1368C5 | 0.088 |
| Deuteranopia (no green cones) | #1163BF | 0.087 |
| Tritanopia (no blue cones) | #486D83 | 0.135 |
| Achromatopsia (no color) | #666666 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6655C1
#6655C1
oklch(52.3% 0.162 286.6)
- #726D00
#726D00
oklch(52.2% 0.112 106.5)
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 #6655C1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.010
- Slate Blue #6A5ACD ΔE 0.023
- Light Indigo #6D5ACF ΔE 0.027
- Dark Periwinkle #665FD1 ΔE 0.033
- Bluey Purple #6241C7 ΔE 0.046
- Warm Blue #4B57DB ΔE 0.055
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Blurple #5539CC ΔE 0.071
Use #6655C1 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.