#4370CF#4370CF

#4370CF is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.2% C 0.155 H 263.2°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#4370CF
RGB	rgb(67, 112, 207)
HSL	hsl(221, 59%, 54%)
HSV	hsv(221, 68%, 81%)
CMYK	cmyk(67.6%, 45.9%, 0%, 18.8%)
CIE-LAB	lab(48.62, 15.71, -53.77)
CIE-LCH	lch(48.62, 56.01, 286.28°)
OKLab	oklab(56.23% -0.0183 -0.1539)
OKLCH	oklch(56.23% 0.155 263.2)
XYZ	xyz(19.3674, 17.2847, 61.3350)
Luminance	0.1729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370CF #CFA243

analogous

#43B6CF #4370CF #5C43CF

triadic

#4370CF #CF4370 #70CF43

tetradic

#4370CF #CF43B6 #CFA243 #43CF5C

square

#4370CF #CF43B6 #CFA243 #43CF5C

split-complementary

#4370CF #CF5C43 #B6CF43

monochromatic

#1F3C79 #2B54AA #4370CF #7495DB #A5BAE8

Accessibility & contrast

On white

4.71

#4370CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#4370CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4370CF

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370CF	#FFFFFF	#000000	##FFFFFF
##4370CF	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#407AD3

Deuteranopia (green-blind)

#246DCD

Tritanopia (blue-blind)

#008695

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4370cf;
/* rgb */ color: rgb(67, 112, 207);
/* oklch */ color: oklch(56.2% 0.155 263.2);

Tailwind

colors: {
  custom: {
    50: '#8698de',
    500: '#4370cf',
    950: '#000000',
  },
}

SCSS

$custom: #4370cf;
$custom-light: #8698de;
$custom-dark: #000000;

JSON

{
  "hex": "#4370cf",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 207
  },
  "hsl": {
    "h": 220.714,
    "s": 59.322,
    "l": 53.725
  },
  "oklch": {
    "l": 0.56233,
    "c": 0.15497,
    "h": 263.2
  },
  "luminance": 0.17287
}

Semantic roles & 50–950 ramp

primary

#4370CF

secondary

#D5C299

accent

#B045E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4370CF

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

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