#6559BC
Closest named color: Iris (#6258C4). oklch(52.6% 0.15 285.5), rgb(101, 89, 188).
Aa
White text reads best on this color (5.66:1).
About this color
#6559BC is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.150 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.014 away. White text reads best on it, at 5.66:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #6559BC |
| RGB | rgb(101, 89, 188) |
| HSL | hsl(247, 42%, 54%) |
| OKLCH | oklch(52.6% 0.15 285.5) |
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 #6559BC | 5.66:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #6559BC | 3.70:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #6559BC text on white | 5.66:1 | AA | Lc 78.1 | Fine for body text |
| #6559BC text on black | 3.70:1 | AA large text | Lc -23.7 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F2
oklch(88.5% 0.038 285.6)
-
Step 300
300
#BCBBEB
oklch(80.9% 0.067 285.7)
-
Step 400
400
#9A97E1
oklch(70.8% 0.107 285.2)
-
Step 500
500
#837BD9
oklch(63.2% 0.138 285.6)
-
Step 600
600 (this color)
#6559BC
oklch(52.6% 0.15 285.5)
-
Step 700
700
#5C51AB
oklch(49.2% 0.139 285.7)
-
Step 800
800
#4B438B
oklch(42.9% 0.115 285.5)
-
Step 900
900
#3E396F
oklch(37.8% 0.09 285.4)
-
Step 950
950
#242241
oklch(27.1% 0.057 284.9)
#6559BC 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) | #296ABF | 0.075 |
| Deuteranopia (no green cones) | #2664BA | 0.074 |
| Tritanopia (no blue cones) | #496E82 | 0.126 |
| Achromatopsia (no color) | #676767 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6559BC
#6559BC
oklch(52.6% 0.15 285.5)
- #746E00
#746E00
oklch(52.7% 0.112 105.9)
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 #6559BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.014
- Slate Blue #6A5ACD ΔE 0.028
- Light Indigo #6D5ACF ΔE 0.032
- Dark Periwinkle #665FD1 ΔE 0.034
- Bluey Purple #6241C7 ΔE 0.058
- Warm Blue #4B57DB ΔE 0.061
- French Blue #436BAD ΔE 0.068
- Deep Lavender #8D5EB7 ΔE 0.070
Use #6559BC 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.