#3551C7#3551C7

#3551C7 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.7% C 0.186 H 268.3°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3551C7
RGB	rgb(53, 81, 199)
HSL	hsl(228, 58%, 49%)
HSV	hsv(228, 73%, 78%)
CMYK	cmyk(73.4%, 59.3%, 0%, 22%)
CIE-LAB	lab(39.18, 30.64, -64.46)
CIE-LCH	lch(39.18, 71.37, 295.43°)
OKLab	oklab(48.74% -0.0054 -0.1861)
OKLCH	oklch(48.74% 0.186 268.3)
XYZ	xyz(14.7159, 10.7637, 55.3238)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3551C7 #C7AB35

analogous

#359AC7 #3551C7 #6235C7

triadic

#3551C7 #C73551 #51C735

tetradic

#3551C7 #C7359A #C7AB35 #35C762

square

#3551C7 #C7359A #C7AB35 #35C762

split-complementary

#3551C7 #C76235 #9AC735

monochromatic

#1B2A66 #283D97 #3551C7 #6479D6 #94A3E2

Accessibility & contrast

On white

6.66

#3551C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3551C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3551C7

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3551C7	#FFFFFF	#000000	##FFFFFF
##3551C7	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CB

Deuteranopia (green-blind)

#0056C5

Tritanopia (blue-blind)

#006F84

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3551c7;
/* rgb */ color: rgb(53, 81, 199);
/* oklch */ color: oklch(48.7% 0.186 268.3);

Tailwind

colors: {
  custom: {
    50: '#8081d9',
    500: '#3551c7',
    950: '#000000',
  },
}

SCSS

$custom: #3551c7;
$custom-light: #8081d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3551c7",
  "rgb": {
    "r": 53,
    "g": 81,
    "b": 199
  },
  "hsl": {
    "h": 228.493,
    "s": 57.937,
    "l": 49.412
  },
  "oklch": {
    "l": 0.4874,
    "c": 0.18614,
    "h": 268.3
  },
  "luminance": 0.10765
}

Semantic roles & 50–950 ramp

primary

#3551C7

secondary

#CEC18A

accent

#C447E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3551C7

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →