#553CA3
Closest named color: Blueberry (#464196). oklch(44.3% 0.158 289.5), rgb(85, 60, 163).
Aa
White text reads best on this color (8.19:1).
About this color
#553CA3 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.158 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.034 away. White text reads best on it, at 8.19:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #553CA3 |
| RGB | rgb(85, 60, 163) |
| HSL | hsl(255, 46%, 44%) |
| OKLCH | oklch(44.3% 0.158 289.5) |
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 #553CA3 | 8.19:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #553CA3 | 2.56:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #553CA3 text on white | 8.19:1 | AAA | Lc 87.9 | Fine for body text |
| #553CA3 text on black | 2.56:1 | Fails | Lc -14.2 | 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 800.
-
Step 50
50
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4FA
oklch(88.5% 0.052 290.1)
-
Step 300
300
#BFB7F9
oklch(80.9% 0.093 289.7)
-
Step 400
400
#9F8FF6
oklch(70.7% 0.148 289.2)
-
Step 500
500
#8A6FF2
oklch(63.1% 0.189 289.3)
-
Step 600
600
#7652E1
oklch(55.6% 0.206 289.5)
-
Step 700
700
#6341C3
oklch(49% 0.192 289.4)
-
Step 800
800 (this color)
#553CA3
oklch(44.3% 0.158 289.5)
-
Step 900
900
#42317D
oklch(37.6% 0.123 289.4)
-
Step 950
950
#271E49
oklch(27.1% 0.077 289.9)
#553CA3 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) | #0051A6 | 0.090 |
| Deuteranopia (no green cones) | #004CA1 | 0.088 |
| Tritanopia (no blue cones) | #3C546A | 0.128 |
| Achromatopsia (no color) | #4F4F4F | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553CA3
#553CA3
oklch(44.3% 0.158 289.5)
- #585700
#585700
oklch(44.3% 0.096 109)
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 #553CA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.034
- Rebecca Purple #663399 ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.045
- Blue With A Hint Of Purple #533CC6 ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.062
- Blurple #5539CC ΔE 0.065
- Twilight #4E518B ΔE 0.070
- Chrysanthemum #560BAD ΔE 0.071
Use #553CA3 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.