#6559B7
Closest named color: Iris (#6258C4). oklch(52.3% 0.143 286.2), rgb(101, 89, 183).
Aa
White text reads best on this color (5.72:1).
About this color
#6559B7 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.143 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.021 away. White text reads best on it, at 5.72:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #6559B7 |
| RGB | rgb(101, 89, 183) |
| HSL | hsl(248, 39%, 53%) |
| OKLCH | oklch(52.3% 0.143 286.2) |
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 #6559B7 | 5.72:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #6559B7 | 3.66:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #6559B7 text on white | 5.72:1 | AA | Lc 78.4 | Fine for body text |
| #6559B7 text on black | 3.66:1 | AA large text | Lc -23.3 | 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
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F2
oklch(88.5% 0.038 285.6)
-
Step 300
300
#BCBBEC
oklch(80.9% 0.069 285.7)
-
Step 400
400
#9B96E3
oklch(70.8% 0.111 286.2)
-
Step 500
500
#847ADA
oklch(63.1% 0.141 286.4)
-
Step 600
600
#6E61C8
oklch(55.6% 0.154 286)
-
Step 700
700 (this color)
#6559B7
oklch(52.3% 0.143 286.2)
-
Step 800
800
#4B428C
oklch(42.7% 0.118 285.8)
-
Step 900
900
#3E3870
oklch(37.6% 0.093 285.9)
-
Step 950
950
#242141
oklch(26.9% 0.058 286)
#6559B7 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) | #2F69BA | 0.071 |
| Deuteranopia (no green cones) | #2D63B5 | 0.069 |
| Tritanopia (no blue cones) | #4B6D7F | 0.122 |
| Achromatopsia (no color) | #666666 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6559B7
#6559B7
oklch(52.3% 0.143 286.2)
- #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 #6559B7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.021
- Slate Blue #6A5ACD ΔE 0.035
- Light Indigo #6D5ACF ΔE 0.039
- Dark Periwinkle #665FD1 ΔE 0.042
- Bluey Purple #6241C7 ΔE 0.062
- French Blue #436BAD ΔE 0.065
- Warm Blue #4B57DB ΔE 0.068
- Deep Lavender #8D5EB7 ΔE 0.070
Use #6559B7 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.