#4073DB#4073DB

#4073DB is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.5% C 0.169 H 262.7°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#4073DB
RGB	rgb(64, 115, 219)
HSL	hsl(220, 68%, 55%)
HSV	hsv(220, 71%, 86%)
CMYK	cmyk(70.8%, 47.5%, 0%, 14.1%)
CIE-LAB	lab(50.05, 17.68, -58.28)
CIE-LCH	lch(50.05, 60.91, 286.88°)
OKLab	oklab(57.54% -0.0215 -0.1672)
OKLCH	oklch(57.54% 0.169 262.7)
XYZ	xyz(21.0267, 18.4637, 69.4598)
Luminance	0.1847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073DB #DBA840

analogous

#40C0DB #4073DB #5A40DB

triadic

#4073DB #DB4073 #73DB40

tetradic

#4073DB #DB40C0 #DBA840 #40DB5A

square

#4073DB #DB40C0 #DBA840 #40DB5A

split-complementary

#4073DB #DB5A40 #C0DB40

monochromatic

#193E87 #2355BB #4073DB #7399E5 #A7BEEE

Accessibility & contrast

On white

4.47

#4073DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#4073DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4073DB

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073DB	#FFFFFF	#000000	##000000
##4073DB	1.00	4.47	4.69	4.69
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7FDF

Deuteranopia (green-blind)

#0F70D9

Tritanopia (blue-blind)

#008B9C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4073db;
/* rgb */ color: rgb(64, 115, 219);
/* oklch */ color: oklch(57.5% 0.169 262.7);

Tailwind

colors: {
  custom: {
    50: '#879ae7',
    500: '#4073db',
    950: '#000000',
  },
}

SCSS

$custom: #4073db;
$custom-light: #879ae7;
$custom-dark: #000000;

JSON

{
  "hex": "#4073db",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 219
  },
  "hsl": {
    "h": 220.258,
    "s": 68.282,
    "l": 55.49
  },
  "oklch": {
    "l": 0.57538,
    "c": 0.16856,
    "h": 262.7
  },
  "luminance": 0.18466
}

Semantic roles & 50–950 ramp

primary

#4073DB

secondary

#DCC69B

accent

#B23DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4073DB

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

Preview Lab → · Contrast checker → · Palette generator →