#4073CC#4073CC

#4073CC is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.148 H 260.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#4073CC
RGB	rgb(64, 115, 204)
HSL	hsl(218, 58%, 53%)
HSV	hsv(218, 69%, 80%)
CMYK	cmyk(68.6%, 43.6%, 0%, 20%)
CIE-LAB	lab(49.14, 12.29, -51.22)
CIE-LCH	lch(49.14, 52.68, 283.49°)
OKLab	oklab(56.54% -0.024 -0.1464)
OKLCH	oklch(56.54% 0.148 260.7)
XYZ	xyz(19.1403, 17.7091, 59.5245)
Luminance	0.1771 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073CC #CC9940

analogous

#40B9CC #4073CC #5340CC

triadic

#4073CC #CC4073 #73CC40

tetradic

#4073CC #CC40B9 #CC9940 #40CC53

square

#4073CC #CC40B9 #CC9940 #40CC53

split-complementary

#4073CC #CC5340 #B9CC40

monochromatic

#1F3D73 #2C57A3 #4073CC #7096D9 #A1BAE6

Accessibility & contrast

On white

4.62

#4073CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#4073CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4073CC

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073CC	#FFFFFF	#000000	##FFFFFF
##4073CC	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#487CCF

Deuteranopia (green-blind)

#2F6FCA

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4073cc;
/* rgb */ color: rgb(64, 115, 204);
/* oklch */ color: oklch(56.5% 0.148 260.7);

Tailwind

colors: {
  custom: {
    50: '#849adc',
    500: '#4073cc',
    950: '#000000',
  },
}

SCSS

$custom: #4073cc;
$custom-light: #849adc;
$custom-dark: #000000;

JSON

{
  "hex": "#4073cc",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 204
  },
  "hsl": {
    "h": 218.143,
    "s": 57.851,
    "l": 52.549
  },
  "oklch": {
    "l": 0.56543,
    "c": 0.14836,
    "h": 260.7
  },
  "luminance": 0.17711
}

Semantic roles & 50–950 ramp

primary

#4073CC

secondary

#D2BC95

accent

#A947E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4073CC

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

Preview Lab → · Contrast checker → · Palette generator →