#4371CB#4371CB

#4371CB is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.2% C 0.148 H 262.3°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#4371CB
RGB	rgb(67, 113, 203)
HSL	hsl(220, 57%, 53%)
HSV	hsv(220, 67%, 80%)
CMYK	cmyk(67%, 44.3%, 0%, 20.4%)
CIE-LAB	lab(48.65, 13.66, -51.42)
CIE-LCH	lch(48.65, 53.21, 284.87°)
OKLab	oklab(56.18% -0.0199 -0.147)
OKLCH	oklch(56.18% 0.148 262.3)
XYZ	xyz(18.9955, 17.3135, 58.8291)
Luminance	0.1731 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4371CB #CB9D43

analogous

#43B5CB #4371CB #5943CB

triadic

#4371CB #CB4371 #71CB43

tetradic

#4371CB #CB43B5 #CB9D43 #43CB59

square

#4371CB #CB43B5 #CB9D43 #43CB59

split-complementary

#4371CB #CB5943 #B5CB43

monochromatic

#203C74 #2D55A4 #4371CB #7395D8 #A3B9E6

Accessibility & contrast

On white

4.71

#4371CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#4371CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4371CB

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4371CB	#FFFFFF	#000000	##FFFFFF
##4371CB	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)

#457ACE

Deuteranopia (green-blind)

#2D6EC9

Tritanopia (blue-blind)

#008694

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4371cb;
/* rgb */ color: rgb(67, 113, 203);
/* oklch */ color: oklch(56.2% 0.148 262.3);

Tailwind

colors: {
  custom: {
    50: '#8599db',
    500: '#4371cb',
    950: '#000000',
  },
}

SCSS

$custom: #4371cb;
$custom-light: #8599db;
$custom-dark: #000000;

JSON

{
  "hex": "#4371cb",
  "rgb": {
    "r": 67,
    "g": 113,
    "b": 203
  },
  "hsl": {
    "h": 219.706,
    "s": 56.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.56183,
    "c": 0.14833,
    "h": 262.3
  },
  "luminance": 0.17315
}

Semantic roles & 50–950 ramp

primary

#4371CB

secondary

#D2BE98

accent

#AD48E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4371CB

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

Preview Lab → · Contrast checker → · Palette generator →