#573279
Closest named color: Dark Slate Blue (#483D8B). oklch(39.8% 0.119 305.7), rgb(87, 50, 121).
Aa
White text reads best on this color (9.82:1).
About this color
#573279 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.119 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.045 away. White text reads best on it, at 9.82:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.82:1 |
Values
| HEX | #573279 |
| RGB | rgb(87, 50, 121) |
| HSL | hsl(271, 42%, 34%) |
| OKLCH | oklch(39.8% 0.119 305.7) |
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 #573279 | 9.82:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #573279 | 2.13:1 | Fails | Lc 11.5 | Not readable |
| #573279 text on white | 9.82:1 | AAA | Lc 92.5 | Preferred for body text |
| #573279 text on black | 2.13:1 | Fails | Lc -10.0 | 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
#EEE6F8
oklch(93.6% 0.025 305.8)
-
Step 200
200
#E1D1F4
oklch(88.4% 0.05 306)
-
Step 300
300
#CFB2EF
oklch(80.9% 0.09 306.1)
-
Step 400
400
#B687E7
oklch(70.6% 0.144 305.6)
-
Step 500
500
#A566DF
oklch(63.1% 0.182 305.9)
-
Step 600
600
#9049CD
oklch(55.6% 0.198 305.6)
-
Step 700
700
#7B39B1
oklch(49.1% 0.184 305.9)
-
Step 800
800
#643090
oklch(42.7% 0.154 305.7)
-
Step 900
900 (this color)
#573279
oklch(39.8% 0.119 305.7)
-
Step 950
950
#301B43
oklch(27.1% 0.075 306.3)
#573279 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) | #18427B | 0.095 |
| Deuteranopia (no green cones) | #254477 | 0.087 |
| Tritanopia (no blue cones) | #513F50 | 0.086 |
| Achromatopsia (no color) | #434343 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573279
#573279
oklch(39.8% 0.119 305.7)
- #3A5000
#3A5000
oklch(39.8% 0.101 125.7)
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 #573279, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Rebecca Purple #663399 ΔE 0.059
- Blueberry #464196 ΔE 0.063
- Twilight #4E518B ΔE 0.082
- Indigo #4B0082 ΔE 0.085
- Grape Purple #5D1451 ΔE 0.085
- Royal Purple #4B006E ΔE 0.090
- Dusk #4E5481 ΔE 0.090
Use #573279 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.