#6556A4
Closest named color: Iris (#6258C4). oklch(50.5% 0.121 290.2), rgb(101, 86, 164).
Aa
White text reads best on this color (6.13:1).
About this color
#6556A4 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 50%, its chroma 0.121 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.050 away. White text reads best on it, at 6.13:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.42:1 |
| White text | 6.13:1 |
Values
| HEX | #6556A4 |
| RGB | rgb(101, 86, 164) |
| HSL | hsl(252, 31%, 49%) |
| OKLCH | oklch(50.5% 0.121 290.2) |
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 #6556A4 | 6.13:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #6556A4 | 3.42:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #6556A4 text on white | 6.13:1 | AA | Lc 80.5 | Fine for body text |
| #6556A4 text on black | 3.42:1 | AA large text | Lc -21.4 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D8D6EE
oklch(88.5% 0.033 289.5)
-
Step 300
300
#C0BBE4
oklch(81% 0.058 290.6)
-
Step 400
400
#A097D7
oklch(70.8% 0.093 290.3)
-
Step 500
500
#897CCC
oklch(63.1% 0.119 290)
-
Step 600
600
#7463B9
oklch(55.5% 0.13 290.6)
-
Step 700
700 (this color)
#6556A4
oklch(50.5% 0.121 290.2)
-
Step 800
800
#4F4381
oklch(42.6% 0.1 290.4)
-
Step 900
900
#423968
oklch(37.7% 0.079 290.9)
-
Step 950
950
#26223D
oklch(27% 0.049 289.5)
#6556A4 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) | #3A63A7 | 0.062 |
| Deuteranopia (no green cones) | #3B60A2 | 0.060 |
| Tritanopia (no blue cones) | #556575 | 0.099 |
| Achromatopsia (no color) | #626262 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6556A4
#6556A4
oklch(50.5% 0.121 290.2)
- #696900
#696900
oklch(50.4% 0.11 109.8)
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 #6556A4, closest first.
No curated palette has a color within ΔE 0.04 of #6556A4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.050
- Twilight #4E518B ΔE 0.056
- Dusky Blue #475F94 ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.065
- French Blue #436BAD ΔE 0.067
- Denim Blue #3B5B92 ΔE 0.068
- Dusk #4E5481 ΔE 0.068
- Light Indigo #6D5ACF ΔE 0.068
Use #6556A4 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.