#3550B7#3550B7

#3550B7 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.2% C 0.166 H 268.2°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#3550B7
RGB	rgb(53, 80, 183)
HSL	hsl(228, 55%, 46%)
HSV	hsv(228, 71%, 72%)
CMYK	cmyk(71%, 56.3%, 0%, 28.2%)
CIE-LAB	lab(37.68, 25.43, -57.54)
CIE-LCH	lch(37.68, 62.91, 293.85°)
OKLab	oklab(47.24% -0.0051 -0.1657)
OKLCH	oklch(47.24% 0.166 268.2)
XYZ	xyz(12.8812, 9.9118, 46.0249)
Luminance	0.0991 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3550B7 #B79C35

analogous

#3591B7 #3550B7 #5B35B7

triadic

#3550B7 #B73550 #50B735

tetradic

#3550B7 #B73591 #B79C35 #35B75B

square

#3550B7 #B73591 #B79C35 #35B75B

split-complementary

#3550B7 #B75B35 #91B735

monochromatic

#1A2758 #273B88 #3550B7 #5A72CF #899BDD

Accessibility & contrast

On white

7.04

#3550B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3550B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3550B7

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3550B7	#FFFFFF	#000000	##FFFFFF
##3550B7	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBB

Deuteranopia (green-blind)

#0053B5

Tritanopia (blue-blind)

#00697B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3550b7;
/* rgb */ color: rgb(53, 80, 183);
/* oklch */ color: oklch(47.2% 0.166 268.2);

Tailwind

colors: {
  custom: {
    50: '#7d80cd',
    500: '#3550b7',
    950: '#000000',
  },
}

SCSS

$custom: #3550b7;
$custom-light: #7d80cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3550b7",
  "rgb": {
    "r": 53,
    "g": 80,
    "b": 183
  },
  "hsl": {
    "h": 227.538,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.47235,
    "c": 0.16583,
    "h": 268.2
  },
  "luminance": 0.09913
}

Semantic roles & 50–950 ramp

primary

#3550B7

secondary

#C7B881

accent

#BF49DE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3550B7

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

Preview Lab → · Contrast checker → · Palette generator →