#4073BC#4073BC

#4073BC is a mid, vivid blue. Relative luminance 0.170; OKLCH L 55.5% C 0.127 H 257.5°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#4073BC
RGB	rgb(64, 115, 188)
HSL	hsl(215, 49%, 49%)
HSV	hsv(215, 66%, 74%)
CMYK	cmyk(66%, 38.8%, 0%, 26.3%)
CIE-LAB	lab(48.24, 6.59, -43.48)
CIE-LCH	lch(48.24, 43.98, 278.61°)
OKLab	oklab(55.55% -0.0273 -0.1237)
OKLCH	oklch(55.55% 0.127 257.5)
XYZ	xyz(17.3189, 16.9806, 49.9321)
Luminance	0.1698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073BC #BC8940

analogous

#40B1BC #4073BC #4B40BC

triadic

#4073BC #BC4073 #73BC40

tetradic

#4073BC #BC40B1 #BC8940 #40BC4B

square

#4073BC #BC40B1 #BC8940 #40BC4B

split-complementary

#4073BC #BC4B40 #B1BC40

monochromatic

#213B61 #30578E #4073BC #6C94CD #9AB5DD

Accessibility & contrast

On white

4.78

#4073BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#4073BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4073BC

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073BC	#FFFFFF	#000000	##FFFFFF
##4073BC	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5279BF

Deuteranopia (green-blind)

#406DBB

Tritanopia (blue-blind)

#00848E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4073bc;
/* rgb */ color: rgb(64, 115, 188);
/* oklch */ color: oklch(55.5% 0.127 257.5);

Tailwind

colors: {
  custom: {
    50: '#819ad0',
    500: '#4073bc',
    950: '#000000',
  },
}

SCSS

$custom: #4073bc;
$custom-light: #819ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4073bc",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 188
  },
  "hsl": {
    "h": 215.323,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.55548,
    "c": 0.12667,
    "h": 257.5
  },
  "luminance": 0.16982
}

Semantic roles & 50–950 ramp

primary

#4073BC

secondary

#C9B18F

accent

#A04FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4073BC

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

Preview Lab → · Contrast checker → · Palette generator →