#6559A6
Closest named color: Iris (#6258C4). oklch(51.2% 0.119 288.6), rgb(101, 89, 166).
Aa
White text reads best on this color (5.94:1).
About this color
#6559A6 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.119 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.048 away. White text reads best on it, at 5.94:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #6559A6 |
| RGB | rgb(101, 89, 166) |
| HSL | hsl(249, 30%, 50%) |
| OKLCH | oklch(51.2% 0.119 288.6) |
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 #6559A6 | 5.94:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #6559A6 | 3.53:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #6559A6 text on white | 5.94:1 | AA | Lc 79.6 | Fine for body text |
| #6559A6 text on black | 3.53:1 | AA large text | Lc -22.2 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D8D6EE
oklch(88.5% 0.033 289.5)
-
Step 300
300
#BEBBE4
oklch(80.8% 0.057 288.4)
-
Step 400
400
#9E97D7
oklch(70.6% 0.093 288.8)
-
Step 500
500
#877DCC
oklch(63.2% 0.117 288.4)
-
Step 600
600
#7264B9
oklch(55.5% 0.129 289.1)
-
Step 700
700 (this color)
#6559A6
oklch(51.2% 0.119 288.6)
-
Step 800
800
#4E4481
oklch(42.7% 0.099 289)
-
Step 900
900
#403A68
oklch(37.7% 0.077 288.1)
-
Step 950
950
#26223D
oklch(27% 0.049 289.5)
#6559A6 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) | #3D65A9 | 0.058 |
| Deuteranopia (no green cones) | #3D62A4 | 0.057 |
| Tritanopia (no blue cones) | #536877 | 0.100 |
| Achromatopsia (no color) | #646464 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6559A6
#6559A6
oklch(51.2% 0.119 288.6)
- #6D6B00
#6D6B00
oklch(51.3% 0.111 108.5)
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 #6559A6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.048
- Dusky Blue #475F94 ΔE 0.056
- Twilight #4E518B ΔE 0.060
- French Blue #436BAD ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.065
- Dark Periwinkle #665FD1 ΔE 0.067
- Denim Blue #3B5B92 ΔE 0.068
Use #6559A6 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.