#6559AB
Closest named color: Iris (#6258C4). oklch(51.5% 0.126 287.8), rgb(101, 89, 171).
Aa
White text reads best on this color (5.88:1).
About this color
#6559AB is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.126 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.040 away. White text reads best on it, at 5.88:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.57:1 |
| White text | 5.88:1 |
Values
| HEX | #6559AB |
| RGB | rgb(101, 89, 171) |
| HSL | hsl(249, 33%, 51%) |
| OKLCH | oklch(51.5% 0.126 287.8) |
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 #6559AB | 5.88:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #6559AB | 3.57:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #6559AB text on white | 5.88:1 | AA | Lc 79.3 | Fine for body text |
| #6559AB text on black | 3.57:1 | AA large text | Lc -22.5 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D7D6EF
oklch(88.5% 0.034 287.5)
-
Step 300
300
#BEBBE7
oklch(80.9% 0.062 288.1)
-
Step 400
400
#9D97DA
oklch(70.7% 0.097 287.7)
-
Step 500
500
#867CD0
oklch(63.1% 0.124 287.7)
-
Step 600
600
#7164BD
oklch(55.7% 0.135 287.9)
-
Step 700
700 (this color)
#6559AB
oklch(51.5% 0.126 287.8)
-
Step 800
800
#4D4484
oklch(42.8% 0.103 287.7)
-
Step 900
900
#40396A
oklch(37.6% 0.082 288.4)
-
Step 950
950
#25223E
oklch(27% 0.051 287.4)
#6559AB 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) | #3966AE | 0.062 |
| Deuteranopia (no green cones) | #3962A9 | 0.060 |
| Tritanopia (no blue cones) | #516A7A | 0.106 |
| Achromatopsia (no color) | #646464 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6559AB
#6559AB
oklch(51.5% 0.126 287.8)
- #6E6B00
#6E6B00
oklch(51.4% 0.111 107.8)
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 #6559AB, closest first.
No curated palette has a color within ΔE 0.04 of #6559AB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.040
- Slate Blue #6A5ACD ΔE 0.054
- Light Indigo #6D5ACF ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.059
- Dusky Blue #475F94 ΔE 0.061
- French Blue #436BAD ΔE 0.061
- Twilight #4E518B ΔE 0.066
- Deep Lavender #8D5EB7 ΔE 0.072
Use #6559AB 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.