#553FB4
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(46.2% 0.176 285.8), rgb(85, 63, 180).
Aa
White text reads best on this color (7.61:1).
About this color
#553FB4 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.176 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.029 away. White text reads best on it, at 7.61:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 2.75:1 |
| White text | 7.61:1 |
Values
| HEX | #553FB4 |
| RGB | rgb(85, 63, 180) |
| HSL | hsl(251, 48%, 48%) |
| OKLCH | oklch(46.2% 0.176 285.8) |
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 #553FB4 | 7.61:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #553FB4 | 2.75:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #553FB4 text on white | 7.61:1 | AAA | Lc 86.0 | Fine for body text |
| #553FB4 text on black | 2.75:1 | Fails | Lc -16.1 | 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
#F4F4FD
oklch(97% 0.012 286.2)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D6D5F8
oklch(88.5% 0.048 286.7)
-
Step 300
300
#BBB9F6
oklch(80.9% 0.086 285.8)
-
Step 400
400
#9A92F1
oklch(70.6% 0.137 286.2)
-
Step 500
500
#8374EC
oklch(63% 0.174 286)
-
Step 600
600
#6E59DB
oklch(55.5% 0.19 285.8)
-
Step 700
700 (this color)
#553FB4
oklch(46.2% 0.176 285.8)
-
Step 800
800
#4B3C9A
oklch(42.7% 0.147 285.6)
-
Step 900
900
#3E357A
oklch(37.7% 0.113 285.6)
-
Step 950
950
#241F48
oklch(26.9% 0.074 285.9)
#553FB4 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) | #0057B8 | 0.087 |
| Deuteranopia (no green cones) | #0050B2 | 0.083 |
| Tritanopia (no blue cones) | #2F5C74 | 0.146 |
| Achromatopsia (no color) | #545454 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553FB4
#553FB4
oklch(46.2% 0.176 285.8)
- #605B00
#605B00
oklch(46.1% 0.098 105.9)
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 #553FB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue With A Hint Of Purple #533CC6 ΔE 0.029
- Bluey Purple #6241C7 ΔE 0.037
- Blurple #5539CC ΔE 0.039
- Majorelle Blue #3F37C9 ΔE 0.053
- Blueberry #464196 ΔE 0.054
- Rebecca Purple #663399 ΔE 0.058
- Purple Blue #5D21D0 ΔE 0.062
- Iris #6258C4 ΔE 0.067
Use #553FB4 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.