#4377CC#4377CC

#4377CC is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.5% C 0.143 H 259.7°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#4377CC
RGB	rgb(67, 119, 204)
HSL	hsl(217, 57%, 53%)
HSV	hsv(217, 67%, 80%)
CMYK	cmyk(67.2%, 41.7%, 0%, 20%)
CIE-LAB	lab(50.39, 10.28, -49.22)
CIE-LCH	lch(50.39, 50.29, 281.80°)
OKLab	oklab(57.54% -0.0254 -0.1404)
OKLCH	oklch(57.54% 0.143 259.7)
XYZ	xyz(19.8067, 18.7446, 59.6893)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4377CC #CC9843

analogous

#43BCCC #4377CC #5343CC

triadic

#4377CC #CC4377 #77CC43

tetradic

#4377CC #CC43BC #CC9843 #43CC53

square

#4377CC #CC43BC #CC9843 #43CC53

split-complementary

#4377CC #CC5343 #BCCC43

monochromatic

#204075 #2D5AA5 #4377CC #739AD9 #A3BDE6

Accessibility & contrast

On white

4.42

#4377CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#4377CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4377CC

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4377CC	#FFFFFF	#000000	##000000
##4377CC	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F7FCF

Deuteranopia (green-blind)

#3A72CA

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4377cc;
/* rgb */ color: rgb(67, 119, 204);
/* oklch */ color: oklch(57.5% 0.143 259.7);

Tailwind

colors: {
  custom: {
    50: '#859ddc',
    500: '#4377cc',
    950: '#000000',
  },
}

SCSS

$custom: #4377cc;
$custom-light: #859ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#4377cc",
  "rgb": {
    "r": 67,
    "g": 119,
    "b": 204
  },
  "hsl": {
    "h": 217.226,
    "s": 57.322,
    "l": 53.137
  },
  "oklch": {
    "l": 0.5754,
    "c": 0.14272,
    "h": 259.7
  },
  "luminance": 0.18747
}

Semantic roles & 50–950 ramp

primary

#4377CC

secondary

#D3BD98

accent

#A647E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4377CC

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

Preview Lab → · Contrast checker → · Palette generator →