#6559C0
Closest named color: Iris (#6258C4). oklch(52.9% 0.156 285.1), rgb(101, 89, 192).
Aa
White text reads best on this color (5.60:1).
About this color
#6559C0 is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.156 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.009 away. White text reads best on it, at 5.60:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #6559C0 |
| RGB | rgb(101, 89, 192) |
| HSL | hsl(247, 45%, 55%) |
| OKLCH | oklch(52.9% 0.156 285.1) |
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 #6559C0 | 5.60:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #6559C0 | 3.74:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #6559C0 text on white | 5.60:1 | AA | Lc 77.8 | Fine for body text |
| #6559C0 text on black | 3.74:1 | AA large text | Lc -24.0 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F3
oklch(88.5% 0.04 285.6)
-
Step 300
300
#BBBBED
oklch(80.9% 0.07 284.7)
-
Step 400
400
#9996E4
oklch(70.6% 0.113 284.9)
-
Step 500
500
#827ADC
oklch(63.1% 0.144 285.2)
-
Step 600
600 (this color)
#6559C0
oklch(52.9% 0.156 285.1)
-
Step 700
700
#5B50AE
oklch(49.1% 0.145 285.1)
-
Step 800
800
#4A428D
oklch(42.7% 0.12 285)
-
Step 900
900
#3D3871
oklch(37.6% 0.095 284.8)
-
Step 950
950
#242142
oklch(26.9% 0.06 285.8)
#6559C0 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) | #236BC4 | 0.078 |
| Deuteranopia (no green cones) | #1F64BE | 0.077 |
| Tritanopia (no blue cones) | #467084 | 0.132 |
| Achromatopsia (no color) | #686868 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6559C0
#6559C0
oklch(52.9% 0.156 285.1)
- #756E00
#756E00
oklch(52.8% 0.112 105.2)
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 #6559C0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.009
- Slate Blue #6A5ACD ΔE 0.022
- Light Indigo #6D5ACF ΔE 0.027
- Dark Periwinkle #665FD1 ΔE 0.029
- Bluey Purple #6241C7 ΔE 0.056
- Warm Blue #4B57DB ΔE 0.056
- Deep Lavender #8D5EB7 ΔE 0.071
- French Blue #436BAD ΔE 0.071
Use #6559C0 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.