#3570B9#3570B9

#3570B9 is a mid, vivid cyan. Relative luminance 0.158; OKLCH L 54.2% C 0.130 H 255.2°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#3570B9
RGB	rgb(53, 112, 185)
HSL	hsl(213, 55%, 47%)
HSV	hsv(213, 71%, 73%)
CMYK	cmyk(71.4%, 39.5%, 0%, 27.5%)
CIE-LAB	lab(46.77, 5.60, -44.10)
CIE-LCH	lch(46.77, 44.45, 277.24°)
OKLab	oklab(54.24% -0.0333 -0.1257)
OKLCH	oklch(54.24% 0.13 255.2)
XYZ	xyz(16.0161, 15.8463, 48.1041)
Luminance	0.1585 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3570B9 #B97E35

analogous

#35B2B9 #3570B9 #3C35B9

triadic

#3570B9 #B93570 #70B935

tetradic

#3570B9 #B935B2 #B97E35 #35B93C

square

#3570B9 #B935B2 #B97E35 #35B93C

split-complementary

#3570B9 #B93C35 #B2B935

monochromatic

#1A365A #275389 #3570B9 #5B8FD0 #8BB0DE

Accessibility & contrast

On white

5.04

#3570B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#3570B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3570B9

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3570B9	#FFFFFF	#000000	##FFFFFF
##3570B9	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E76BC

Deuteranopia (green-blind)

#3A69B8

Tritanopia (blue-blind)

#00818B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3570b9;
/* rgb */ color: rgb(53, 112, 185);
/* oklch */ color: oklch(54.2% 0.130 255.2);

Tailwind

colors: {
  custom: {
    50: '#7c98ce',
    500: '#3570b9',
    950: '#000000',
  },
}

SCSS

$custom: #3570b9;
$custom-light: #7c98ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3570b9",
  "rgb": {
    "r": 53,
    "g": 112,
    "b": 185
  },
  "hsl": {
    "h": 213.182,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.54236,
    "c": 0.13004,
    "h": 255.2
  },
  "luminance": 0.15848
}

Semantic roles & 50–950 ramp

primary

#3570B9

secondary

#C8A982

accent

#9C49DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3570B9

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

Preview Lab → · Contrast checker → · Palette generator →