#6556BD
Closest named color: Iris (#6258C4). oklch(52.1% 0.156 286.3), rgb(101, 86, 189).
Aa
White text reads best on this color (5.80:1).
About this color
#6556BD is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.156 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.012 away. White text reads best on it, at 5.80:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #6556BD |
| RGB | rgb(101, 86, 189) |
| HSL | hsl(249, 44%, 54%) |
| OKLCH | oklch(52.1% 0.156 286.3) |
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 #6556BD | 5.80:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #6556BD | 3.61:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #6556BD text on white | 5.80:1 | AA | Lc 78.8 | Fine for body text |
| #6556BD text on black | 3.61:1 | AA large text | Lc -23.0 | 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 700.
-
Step 50
50
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F4
oklch(88.5% 0.041 285.5)
-
Step 300
300
#BCBAF0
oklch(80.9% 0.076 286.3)
-
Step 400
400
#9B95E8
oklch(70.8% 0.12 286.2)
-
Step 500
500
#8478E1
oklch(63.1% 0.154 286.3)
-
Step 600
600
#6F5ECF
oklch(55.6% 0.168 286.5)
-
Step 700
700 (this color)
#6556BD
oklch(52.1% 0.156 286.3)
-
Step 800
800
#4C4091
oklch(42.8% 0.129 286.4)
-
Step 900
900
#3F3774
oklch(37.8% 0.101 286.5)
-
Step 950
950
#242144
oklch(27.1% 0.064 285.2)
#6556BD 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) | #1F68C1 | 0.081 |
| Deuteranopia (no green cones) | #1C62BB | 0.081 |
| Tritanopia (no blue cones) | #486D81 | 0.132 |
| Achromatopsia (no color) | #656565 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6556BD
#6556BD
oklch(52.1% 0.156 286.3)
- #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 #6556BD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.012
- Slate Blue #6A5ACD ΔE 0.027
- Light Indigo #6D5ACF ΔE 0.032
- Dark Periwinkle #665FD1 ΔE 0.036
- Bluey Purple #6241C7 ΔE 0.050
- Warm Blue #4B57DB ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.069
- Deep Lavender #8D5EB7 ΔE 0.074
Use #6556BD 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.