#4073CB#4073CB

#4073CB is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.147 H 260.5°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#4073CB
RGB	rgb(64, 115, 203)
HSL	hsl(218, 57%, 52%)
HSV	hsv(218, 68%, 80%)
CMYK	cmyk(68.5%, 43.3%, 0%, 20.4%)
CIE-LAB	lab(49.08, 11.93, -50.74)
CIE-LCH	lch(49.08, 52.13, 283.23°)
OKLab	oklab(56.48% -0.0242 -0.145)
OKLCH	oklch(56.48% 0.147 260.5)
XYZ	xyz(19.0207, 17.6613, 58.8949)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073CB #CB9840

analogous

#40B8CB #4073CB #5340CB

triadic

#4073CB #CB4073 #73CB40

tetradic

#4073CB #CB40B8 #CB9840 #40CB53

square

#4073CB #CB40B8 #CB9840 #40CB53

split-complementary

#4073CB #CB5340 #B8CB40

monochromatic

#1F3D72 #2C57A2 #4073CB #7096D8 #A0BAE5

Accessibility & contrast

On white

4.63

#4073CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#4073CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4073CB

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073CB	#FFFFFF	#000000	##FFFFFF
##4073CB	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#497CCE

Deuteranopia (green-blind)

#316FC9

Tritanopia (blue-blind)

#008795

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4073cb;
/* rgb */ color: rgb(64, 115, 203);
/* oklch */ color: oklch(56.5% 0.147 260.5);

Tailwind

colors: {
  custom: {
    50: '#849adb',
    500: '#4073cb',
    950: '#000000',
  },
}

SCSS

$custom: #4073cb;
$custom-light: #849adb;
$custom-dark: #000000;

JSON

{
  "hex": "#4073cb",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 203
  },
  "hsl": {
    "h": 217.986,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.56479,
    "c": 0.14701,
    "h": 260.5
  },
  "luminance": 0.17663
}

Semantic roles & 50–950 ramp

primary

#4073CB

secondary

#D2BB95

accent

#A847E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4073CB

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

Preview Lab → · Contrast checker → · Palette generator →