#4370DB#4370DB

#4370DB is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.0% C 0.171 H 264.5°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#4370DB
RGB	rgb(67, 112, 219)
HSL	hsl(222, 68%, 56%)
HSV	hsv(222, 69%, 86%)
CMYK	cmyk(69.4%, 48.9%, 0%, 14.1%)
CIE-LAB	lab(49.37, 19.99, -59.38)
CIE-LCH	lch(49.37, 62.66, 288.61°)
OKLab	oklab(57.05% -0.0165 -0.1704)
OKLCH	oklch(57.05% 0.171 264.5)
XYZ	xyz(20.8906, 17.8940, 69.3570)
Luminance	0.1790 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370DB #DBAE43

analogous

#43BCDB #4370DB #6243DB

triadic

#4370DB #DB4370 #70DB43

tetradic

#4370DB #DB43BC #DBAE43 #43DB62

square

#4370DB #DB43BC #DBAE43 #43DB62

split-complementary

#4370DB #DB6243 #BCDB43

monochromatic

#1A3B89 #2451BD #4370DB #7697E5 #AABEEF

Accessibility & contrast

On white

4.59

#4370DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#4370DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4370DB

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370DB	#FFFFFF	#000000	##FFFFFF
##4370DB	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#347DDF

Deuteranopia (green-blind)

#006FD9

Tritanopia (blue-blind)

#00899B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4370db;
/* rgb */ color: rgb(67, 112, 219);
/* oklch */ color: oklch(57.0% 0.171 264.5);

Tailwind

colors: {
  custom: {
    50: '#8898e7',
    500: '#4370db',
    950: '#000000',
  },
}

SCSS

$custom: #4370db;
$custom-light: #8898e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4370db",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 219
  },
  "hsl": {
    "h": 222.237,
    "s": 67.857,
    "l": 56.078
  },
  "oklch": {
    "l": 0.57048,
    "c": 0.17121,
    "h": 264.5
  },
  "luminance": 0.17896
}

Semantic roles & 50–950 ramp

primary

#4370DB

secondary

#DCCA9E

accent

#B73DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4370DB

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

Preview Lab → · Contrast checker → · Palette generator →