#6556BA
Closest named color: Iris (#6258C4). oklch(51.9% 0.152 286.7), rgb(101, 86, 186).
Aa
White text reads best on this color (5.84:1).
About this color
#6556BA is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.152 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.016 away. White text reads best on it, at 5.84:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #6556BA |
| RGB | rgb(101, 86, 186) |
| HSL | hsl(249, 42%, 53%) |
| OKLCH | oklch(51.9% 0.152 286.7) |
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 #6556BA | 5.84:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #6556BA | 3.59:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #6556BA text on white | 5.84:1 | AA | Lc 79.0 | Fine for body text |
| #6556BA text on black | 3.59:1 | AA large text | Lc -22.8 | 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
#BCBAEE
oklch(80.8% 0.073 286.4)
-
Step 400
400
#9B95E6
oklch(70.7% 0.117 286.4)
-
Step 500
500
#8578DF
oklch(63.1% 0.151 287)
-
Step 600
600
#6F5FCC
oklch(55.6% 0.163 286.6)
-
Step 700
700 (this color)
#6556BA
oklch(51.9% 0.152 286.7)
-
Step 800
800
#4C408F
oklch(42.7% 0.126 286.8)
-
Step 900
900
#3F3772
oklch(37.6% 0.098 286.9)
-
Step 950
950
#252143
oklch(27.1% 0.062 286.9)
#6556BA 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) | #2367BD | 0.079 |
| Deuteranopia (no green cones) | #2262B8 | 0.078 |
| Tritanopia (no blue cones) | #4A6C80 | 0.127 |
| Achromatopsia (no color) | #656565 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6556BA
#6556BA
oklch(51.9% 0.152 286.7)
- #716C00
#716C00
oklch(51.9% 0.111 106.5)
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 #6556BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.016
- Slate Blue #6A5ACD ΔE 0.032
- Light Indigo #6D5ACF ΔE 0.036
- Dark Periwinkle #665FD1 ΔE 0.040
- Bluey Purple #6241C7 ΔE 0.053
- Warm Blue #4B57DB ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.071
- French Blue #436BAD ΔE 0.073
Use #6556BA 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.