#3579C9#3579C9

#3579C9 is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.3% C 0.141 H 254.4°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3579C9
RGB	rgb(53, 121, 201)
HSL	hsl(212, 58%, 50%)
HSV	hsv(212, 74%, 79%)
CMYK	cmyk(73.6%, 39.8%, 0%, 21.2%)
CIE-LAB	lab(50.27, 5.90, -47.73)
CIE-LCH	lch(50.27, 48.09, 277.05°)
OKLab	oklab(57.25% -0.0379 -0.1362)
OKLCH	oklch(57.25% 0.141 254.4)
XYZ	xyz(18.8443, 18.6466, 57.8530)
Luminance	0.1865 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579C9 #C98535

analogous

#35C3C9 #3579C9 #3B35C9

triadic

#3579C9 #C93579 #79C935

tetradic

#3579C9 #C935C3 #C98535 #35C93B

square

#3579C9 #C935C3 #C98535 #35C93B

split-complementary

#3579C9 #C93B35 #C3C935

monochromatic

#1B3F68 #285C99 #3579C9 #6599D6 #95B9E3

Accessibility & contrast

On white

4.44

#3579C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3579C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3579C9

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579C9	#FFFFFF	#000000	##000000
##3579C9	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#537FCC

Deuteranopia (green-blind)

#3C71C7

Tritanopia (blue-blind)

#008C97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3579c9;
/* rgb */ color: rgb(53, 121, 201);
/* oklch */ color: oklch(57.3% 0.141 254.4);

Tailwind

colors: {
  custom: {
    50: '#7f9fda',
    500: '#3579c9',
    950: '#000000',
  },
}

SCSS

$custom: #3579c9;
$custom-light: #7f9fda;
$custom-dark: #000000;

JSON

{
  "hex": "#3579c9",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 201
  },
  "hsl": {
    "h": 212.432,
    "s": 58.268,
    "l": 49.804
  },
  "oklch": {
    "l": 0.57251,
    "c": 0.14139,
    "h": 254.4
  },
  "luminance": 0.18649
}

Semantic roles & 50–950 ramp

primary

#3579C9

secondary

#CEB08B

accent

#9A46E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #3579C9

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

Preview Lab → · Contrast checker → · Palette generator →