#3570C9#3570C9

#3570C9 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.3% C 0.151 H 258.6°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3570C9
RGB	rgb(53, 112, 201)
HSL	hsl(216, 58%, 50%)
HSV	hsv(216, 74%, 79%)
CMYK	cmyk(73.6%, 44.3%, 0%, 21.2%)
CIE-LAB	lab(47.70, 11.50, -51.83)
CIE-LCH	lch(47.70, 53.09, 282.51°)
OKLab	oklab(55.26% -0.0299 -0.1484)
OKLCH	oklch(55.26% 0.151 258.6)
XYZ	xyz(17.8011, 16.5603, 57.5053)
Luminance	0.1656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3570C9 #C98E35

analogous

#35BAC9 #3570C9 #4435C9

triadic

#3570C9 #C93570 #70C935

tetradic

#3570C9 #C935BA #C98E35 #35C944

square

#3570C9 #C935BA #C98E35 #35C944

split-complementary

#3570C9 #C94435 #BAC935

monochromatic

#1B3A68 #285599 #3570C9 #6592D6 #95B4E3

Accessibility & contrast

On white

4.87

#3570C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3570C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3570C9

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3570C9	#FFFFFF	#000000	##FFFFFF
##3570C9	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4378CC

Deuteranopia (green-blind)

#266BC7

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3570c9;
/* rgb */ color: rgb(53, 112, 201);
/* oklch */ color: oklch(55.3% 0.151 258.6);

Tailwind

colors: {
  custom: {
    50: '#7f98da',
    500: '#3570c9',
    950: '#000000',
  },
}

SCSS

$custom: #3570c9;
$custom-light: #7f98da;
$custom-dark: #000000;

JSON

{
  "hex": "#3570c9",
  "rgb": {
    "r": 53,
    "g": 112,
    "b": 201
  },
  "hsl": {
    "h": 216.081,
    "s": 58.268,
    "l": 49.804
  },
  "oklch": {
    "l": 0.55258,
    "c": 0.15142,
    "h": 258.6
  },
  "luminance": 0.16562
}

Semantic roles & 50–950 ramp

primary

#3570C9

secondary

#CEB48B

accent

#A446E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0D15

muted

#7C7E83

Preview Lab

Preview with #3570C9

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

Preview Lab → · Contrast checker → · Palette generator →