#3570EF#3570EF

#3570EF is a mid, highly saturated blue. Relative luminance 0.186; OKLCH L 58.0% C 0.201 H 262.9°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#3570EF
RGB	rgb(53, 112, 239)
HSL	hsl(221, 85%, 57%)
HSV	hsv(221, 78%, 94%)
CMYK	cmyk(77.8%, 53.1%, 0%, 6.3%)
CIE-LAB	lab(50.19, 25.56, -69.34)
CIE-LCH	lch(50.19, 73.90, 290.23°)
OKLab	oklab(57.95% -0.0248 -0.1999)
OKLCH	oklch(57.95% 0.201 262.9)
XYZ	xyz(22.8368, 18.5745, 84.0263)
Luminance	0.1858 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3570EF #EFB435

analogous

#35CDEF #3570EF #5735EF

triadic

#3570EF #EF3570 #70EF35

tetradic

#3570EF #EF35CD #EFB435 #35EF57

square

#3570EF #EF35CD #EFB435 #35EF57

split-complementary

#3570EF #EF5735 #CDEF35

monochromatic

#0C3A9D #114FD6 #3570EF #6E98F3 #A6C0F8

Accessibility & contrast

On white

4.45

#3570EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#3570EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3570EF

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3570EF	#FFFFFF	#000000	##000000
##3570EF	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080F3

Deuteranopia (green-blind)

#006FED

Tritanopia (blue-blind)

#008FA5

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3570ef;
/* rgb */ color: rgb(53, 112, 239);
/* oklch */ color: oklch(58.0% 0.201 262.9);

Tailwind

colors: {
  custom: {
    50: '#8798f5',
    500: '#3570ef',
    950: '#000000',
  },
}

SCSS

$custom: #3570ef;
$custom-light: #8798f5;
$custom-dark: #000000;

JSON

{
  "hex": "#3570ef",
  "rgb": {
    "r": 53,
    "g": 112,
    "b": 239
  },
  "hsl": {
    "h": 220.968,
    "s": 85.321,
    "l": 57.255
  },
  "oklch": {
    "l": 0.57952,
    "c": 0.20145,
    "h": 262.9
  },
  "luminance": 0.18577
}

Semantic roles & 50–950 ramp

primary

#3570EF

secondary

#E6CE9A

accent

#BA2CFC

background

#F9F9FF

surface

#F1F2FE

border

#CBCCD6

text

#0D0D17

muted

#7E7E85

Preview Lab

Preview with #3570EF

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

Preview Lab → · Contrast checker → · Palette generator →