#3557B7#3557B7

#3557B7 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.7% C 0.157 H 266.0°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#3557B7
RGB	rgb(53, 87, 183)
HSL	hsl(224, 55%, 46%)
HSV	hsv(224, 71%, 72%)
CMYK	cmyk(71%, 52.5%, 0%, 28.2%)
CIE-LAB	lab(39.56, 20.86, -54.49)
CIE-LCH	lch(39.56, 58.35, 290.95°)
OKLab	oklab(48.65% -0.0109 -0.1567)
OKLCH	oklch(48.65% 0.157 266)
XYZ	xyz(13.4207, 10.9908, 46.2047)
Luminance	0.1099 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557B7 #B79535

analogous

#3598B7 #3557B7 #5435B7

triadic

#3557B7 #B73557 #57B735

tetradic

#3557B7 #B73598 #B79535 #35B754

square

#3557B7 #B73598 #B79535 #35B754

split-complementary

#3557B7 #B75435 #98B735

monochromatic

#1A2A58 #274088 #3557B7 #5A79CF #899FDD

Accessibility & contrast

On white

6.57

#3557B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#3557B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557B7

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557B7	#FFFFFF	#000000	##FFFFFF
##3557B7	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1763BA

Deuteranopia (green-blind)

#0058B5

Tritanopia (blue-blind)

#006E7E

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3557b7;
/* rgb */ color: rgb(53, 87, 183);
/* oklch */ color: oklch(48.7% 0.157 266.0);

Tailwind

colors: {
  custom: {
    50: '#7d85cd',
    500: '#3557b7',
    950: '#000000',
  },
}

SCSS

$custom: #3557b7;
$custom-light: #7d85cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3557b7",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 183
  },
  "hsl": {
    "h": 224.308,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.48653,
    "c": 0.15706,
    "h": 266
  },
  "luminance": 0.10992
}

Semantic roles & 50–950 ramp

primary

#3557B7

secondary

#C7B581

accent

#B749DE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3557B7

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

Preview Lab → · Contrast checker → · Palette generator →