#4379DD#4379DD

#4379DD is a mid, vivid blue. Relative luminance 0.201; OKLCH L 59.1% C 0.163 H 261.5°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#4379DD
RGB	rgb(67, 121, 221)
HSL	hsl(219, 69%, 56%)
HSV	hsv(219, 70%, 87%)
CMYK	cmyk(69.7%, 45.2%, 0%, 13.3%)
CIE-LAB	lab(51.93, 15.09, -56.38)
CIE-LCH	lch(51.93, 58.37, 284.99°)
OKLab	oklab(59.05% -0.0242 -0.1614)
OKLCH	oklch(59.05% 0.163 261.5)
XYZ	xyz(22.1986, 20.0862, 71.0997)
Luminance	0.2009 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4379DD #DDA743

analogous

#43C6DD #4379DD #5A43DD

triadic

#4379DD #DD4379 #79DD43

tetradic

#4379DD #DD43C6 #DDA743 #43DD5A

square

#4379DD #DD43C6 #DDA743 #43DD5A

split-complementary

#4379DD #DD5A43 #C6DD43

monochromatic

#19428C #235AC0 #4379DD #779EE6 #ABC3F0

Accessibility & contrast

On white

4.19

#4379DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#4379DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4379DD

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4379DD	#FFFFFF	#000000	##000000
##4379DD	1.00	4.19	5.02	5.02
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4683E1

Deuteranopia (green-blind)

#2775DB

Tritanopia (blue-blind)

#0090A0

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4379dd;
/* rgb */ color: rgb(67, 121, 221);
/* oklch */ color: oklch(59.1% 0.163 261.5);

Tailwind

colors: {
  custom: {
    50: '#889fe8',
    500: '#4379dd',
    950: '#000000',
  },
}

SCSS

$custom: #4379dd;
$custom-light: #889fe8;
$custom-dark: #000000;

JSON

{
  "hex": "#4379dd",
  "rgb": {
    "r": 67,
    "g": 121,
    "b": 221
  },
  "hsl": {
    "h": 218.961,
    "s": 69.369,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59054,
    "c": 0.16325,
    "h": 261.5
  },
  "luminance": 0.20088
}

Semantic roles & 50–950 ramp

primary

#4379DD

secondary

#DEC79E

accent

#AE3CEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4379DD

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

Preview Lab → · Contrast checker → · Palette generator →