#3579B1#3579B1

#3579B1 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.9% C 0.111 H 246.5°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3579B1
RGB	rgb(53, 121, 177)
HSL	hsl(207, 54%, 45%)
HSV	hsv(207, 70%, 69%)
CMYK	cmyk(70.1%, 31.6%, 0%, 30.6%)
CIE-LAB	lab(49.01, -2.78, -35.92)
CIE-LCH	lch(49.01, 36.02, 265.57°)
OKLab	oklab(55.86% -0.0443 -0.1017)
OKLCH	oklch(55.86% 0.111 246.5)
XYZ	xyz(16.2384, 17.6042, 44.1286)
Luminance	0.1761 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579B1 #B16D35

analogous

#35B1AB #3579B1 #353BB1

triadic

#3579B1 #B13579 #79B135

tetradic

#3579B1 #AB35B1 #B16D35 #3BB135

square

#3579B1 #AB35B1 #B16D35 #3BB135

split-complementary

#3579B1 #B1353B #B1AB35

monochromatic

#193953 #275982 #3579B1 #5797CD #86B4DB

Accessibility & contrast

On white

4.64

#3579B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3579B1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3579B1

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579B1	#FFFFFF	#000000	##FFFFFF
##3579B1	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607BB3

Deuteranopia (green-blind)

#4F6FB0

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3579b1;
/* rgb */ color: rgb(53, 121, 177);
/* oklch */ color: oklch(55.9% 0.111 246.5);

Tailwind

colors: {
  custom: {
    50: '#7b9fc8',
    500: '#3579b1',
    950: '#000000',
  },
}

SCSS

$custom: #3579b1;
$custom-light: #7b9fc8;
$custom-dark: #000000;

JSON

{
  "hex": "#3579b1",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 177
  },
  "hsl": {
    "h": 207.097,
    "s": 53.913,
    "l": 45.098
  },
  "oklch": {
    "l": 0.55855,
    "c": 0.11089,
    "h": 246.5
  },
  "luminance": 0.17606
}

Semantic roles & 50–950 ramp

primary

#3579B1

secondary

#C49D7D

accent

#8D4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3579B1

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

Preview Lab → · Contrast checker → · Palette generator →