#553FA6
Closest named color: Blueberry (#464196). oklch(45% 0.158 288.2), rgb(85, 63, 166).
Aa
White text reads best on this color (7.93:1).
About this color
#553FA6 is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.158 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.036 away. White text reads best on it, at 7.93:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #553FA6 |
| RGB | rgb(85, 63, 166) |
| HSL | hsl(253, 45%, 45%) |
| OKLCH | oklch(45% 0.158 288.2) |
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 #553FA6 | 7.93:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #553FA6 | 2.64:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #553FA6 text on white | 7.93:1 | AAA | Lc 87.1 | Fine for body text |
| #553FA6 text on black | 2.64:1 | Fails | Lc -15.0 | 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 800.
-
Step 50
50
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E8E7FB
oklch(93.5% 0.027 288.2)
-
Step 200
200
#D7D4FA
oklch(88.4% 0.052 288.9)
-
Step 300
300
#BDB7F9
oklch(80.8% 0.093 288.3)
-
Step 400
400
#9D8FF7
oklch(70.6% 0.149 288.1)
-
Step 500
500
#8870F3
oklch(63.2% 0.189 288.2)
-
Step 600
600
#7353E2
oklch(55.6% 0.207 288)
-
Step 700
700
#6142C4
oklch(49% 0.192 288.2)
-
Step 800
800 (this color)
#553FA6
oklch(45% 0.158 288.2)
-
Step 900
900
#41327E
oklch(37.8% 0.123 288.1)
-
Step 950
950
#261E4A
oklch(27.1% 0.079 288.4)
#553FA6 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) | #0053A9 | 0.087 |
| Deuteranopia (no green cones) | #004EA4 | 0.086 |
| Tritanopia (no blue cones) | #3A576C | 0.130 |
| Achromatopsia (no color) | #515151 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553FA6
#553FA6
oklch(45% 0.158 288.2)
- #5B5900
#5B5900
oklch(45.1% 0.097 108.2)
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 #553FA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.036
- Rebecca Purple #663399 ΔE 0.043
- Dark Slate Blue #483D8B ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.052
- Bluey Purple #6241C7 ΔE 0.057
- Blurple #5539CC ΔE 0.061
- Twilight #4E518B ΔE 0.068
- Majorelle Blue #3F37C9 ΔE 0.069
Use #553FA6 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.