#533778
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.108 301.6), rgb(83, 55, 120).
Aa
White text reads best on this color (9.60:1).
About this color
#533778 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.108 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 9.60:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.18:1 |
| White text | 9.60:1 |
Values
| HEX | #533778 |
| RGB | rgb(83, 55, 120) |
| HSL | hsl(266, 37%, 34%) |
| OKLCH | oklch(40.1% 0.108 301.6) |
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 #533778 | 9.60:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #533778 | 2.18:1 | Fails | Lc 11.9 | Not readable |
| #533778 text on white | 9.60:1 | AAA | Lc 92.0 | Preferred for body text |
| #533778 text on black | 2.18:1 | Fails | Lc -10.4 | Not readable |
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 900.
-
Step 50
50
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#ECE7F7
oklch(93.7% 0.022 300.2)
-
Step 200
200
#DED3F3
oklch(88.6% 0.045 301.1)
-
Step 300
300
#CAB5ED
oklch(81% 0.081 301.8)
-
Step 400
400
#AF8CE4
oklch(70.7% 0.13 301.5)
-
Step 500
500
#9C6DDC
oklch(63.1% 0.165 301.4)
-
Step 600
600
#8851CA
oklch(55.6% 0.182 301.7)
-
Step 700
700
#7341AE
oklch(49% 0.168 301.6)
-
Step 800
800
#5E378D
oklch(42.8% 0.138 301.7)
-
Step 900
900 (this color)
#533778
oklch(40.1% 0.108 301.6)
-
Step 950
950
#2D1D42
oklch(27.1% 0.068 302)
#533778 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) | #21447A | 0.077 |
| Deuteranopia (no green cones) | #294576 | 0.071 |
| Tritanopia (no blue cones) | #4C4352 | 0.082 |
| Achromatopsia (no color) | #454545 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #533778
#533778
oklch(40.1% 0.108 301.6)
- #404F00
#404F00
oklch(40% 0.096 121.3)
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 #533778, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Blueberry #464196 ΔE 0.057
- Rebecca Purple #663399 ΔE 0.065
- Twilight #4E518B ΔE 0.071
- Dusk #4E5481 ΔE 0.078
- Cobalt #1E488F ΔE 0.086
- Twilight Blue #0A437A ΔE 0.092
- Dusty Grape #545775 ΔE 0.092
Use #533778 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.