#6556A0
Closest named color: Twilight (#4E518B). oklch(50.2% 0.115 291), rgb(101, 86, 160).
Aa
White text reads best on this color (6.19:1).
About this color
#6556A0 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 50%, its chroma 0.115 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.052 away. White text reads best on it, at 6.19:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.39:1 |
| White text | 6.19:1 |
Values
| HEX | #6556A0 |
| RGB | rgb(101, 86, 160) |
| HSL | hsl(252, 30%, 48%) |
| OKLCH | oklch(50.2% 0.115 291) |
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 #6556A0 | 6.19:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #6556A0 | 3.39:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #6556A0 text on white | 6.19:1 | AA | Lc 80.7 | Fine for body text |
| #6556A0 text on black | 3.39:1 | AA large text | Lc -21.1 | 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
#E9E8F4
oklch(93.5% 0.016 289.9)
-
Step 200
200
#D9D6ED
oklch(88.5% 0.031 291.7)
-
Step 300
300
#C0BBE3
oklch(80.9% 0.056 290.8)
-
Step 400
400
#A097D4
oklch(70.7% 0.089 290.7)
-
Step 500
500
#8A7CC9
oklch(63.1% 0.114 291.1)
-
Step 600
600
#7464B6
oklch(55.5% 0.125 290.7)
-
Step 700
700 (this color)
#6556A0
oklch(50.2% 0.115 291)
-
Step 800
800
#50447F
oklch(42.7% 0.096 291.1)
-
Step 900
900
#423A66
oklch(37.8% 0.074 290.8)
-
Step 950
950
#27223C
oklch(27.1% 0.048 291.7)
#6556A0 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) | #3C62A3 | 0.060 |
| Deuteranopia (no green cones) | #3E5F9E | 0.057 |
| Tritanopia (no blue cones) | #566473 | 0.095 |
| Achromatopsia (no color) | #616161 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6556A0
#6556A0
oklch(50.2% 0.115 291)
- #676900
#676900
oklch(50.2% 0.11 111.1)
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 #6556A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.052
- Dusky Blue #475F94 ΔE 0.054
- Iris #6258C4 ΔE 0.057
- Dusk #4E5481 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.065
- Muted Purple #805B87 ΔE 0.065
- French Blue #436BAD ΔE 0.067
- Slate Blue #6A5ACD ΔE 0.071
Use #6556A0 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.