#6553A6
Closest named color: Iris (#6258C4). oklch(50% 0.128 291), rgb(101, 83, 166).
Aa
White text reads best on this color (6.28:1).
About this color
#6553A6 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 50%, its chroma 0.128 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.047 away. White text reads best on it, at 6.28:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.34:1 |
| White text | 6.28:1 |
Values
| HEX | #6553A6 |
| RGB | rgb(101, 83, 166) |
| HSL | hsl(253, 33%, 49%) |
| OKLCH | oklch(50% 0.128 291) |
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 #6553A6 | 6.28:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #6553A6 | 3.34:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #6553A6 text on white | 6.28:1 | AA | Lc 81.1 | Fine for body text |
| #6553A6 text on black | 3.34:1 | AA large text | Lc -20.7 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D9D6EF
oklch(88.6% 0.034 291.2)
-
Step 300
300
#C0BAE6
oklch(80.8% 0.062 291.2)
-
Step 400
400
#A196DA
oklch(70.8% 0.099 291.1)
-
Step 500
500
#8A7AD0
oklch(63.1% 0.127 290.8)
-
Step 600
600
#7562BD
oklch(55.7% 0.137 290.9)
-
Step 700
700 (this color)
#6553A6
oklch(50% 0.128 291)
-
Step 800
800
#504284
oklch(42.7% 0.107 290.9)
-
Step 900
900
#42386A
oklch(37.6% 0.084 291)
-
Step 950
950
#27213E
oklch(27% 0.053 291.9)
#6553A6 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) | #3361A9 | 0.070 |
| Deuteranopia (no green cones) | #355EA4 | 0.067 |
| Tritanopia (no blue cones) | #546475 | 0.105 |
| Achromatopsia (no color) | #606060 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6553A6
#6553A6
oklch(50% 0.128 291)
- #676800
#676800
oklch(50% 0.109 110.4)
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 #6553A6, closest first.
No curated palette has a color within ΔE 0.04 of #6553A6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.047
- Twilight #4E518B ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.062
- Dusky Blue #475F94 ΔE 0.063
- Light Indigo #6D5ACF ΔE 0.066
- Bluey Purple #6241C7 ΔE 0.069
- Dark Periwinkle #665FD1 ΔE 0.070
- Dusk #4E5481 ΔE 0.072
Use #6553A6 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.