#4073BD#4073BD

#4073BD is a mid, vivid blue. Relative luminance 0.170; OKLCH L 55.6% C 0.128 H 257.8°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#4073BD
RGB	rgb(64, 115, 189)
HSL	hsl(216, 49%, 50%)
HSV	hsv(216, 66%, 74%)
CMYK	cmyk(66.1%, 39.2%, 0%, 25.9%)
CIE-LAB	lab(48.29, 6.94, -43.97)
CIE-LCH	lch(48.29, 44.51, 278.97°)
OKLab	oklab(55.61% -0.0271 -0.1251)
OKLCH	oklch(55.61% 0.128 257.8)
XYZ	xyz(17.4271, 17.0239, 50.5018)
Luminance	0.1703 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4073BD #BD8A40

analogous

#40B2BD #4073BD #4C40BD

triadic

#4073BD #BD4073 #73BD40

tetradic

#4073BD #BD40B2 #BD8A40 #40BD4C

square

#4073BD #BD40B2 #BD8A40 #40BD4C

split-complementary

#4073BD #BD4C40 #B2BD40

monochromatic

#213B62 #31578F #4073BD #6D94CD #9AB6DD

Accessibility & contrast

On white

4.77

#4073BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#4073BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4073BD

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4073BD	#FFFFFF	#000000	##FFFFFF
##4073BD	1.00	4.77	4.41	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5279C0

Deuteranopia (green-blind)

#3F6DBB

Tritanopia (blue-blind)

#00848F

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4073bd;
/* rgb */ color: rgb(64, 115, 189);
/* oklch */ color: oklch(55.6% 0.128 257.8);

Tailwind

colors: {
  custom: {
    50: '#829ad1',
    500: '#4073bd',
    950: '#000000',
  },
}

SCSS

$custom: #4073bd;
$custom-light: #829ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#4073bd",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 189
  },
  "hsl": {
    "h": 215.52,
    "s": 49.407,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55608,
    "c": 0.12803,
    "h": 257.8
  },
  "luminance": 0.17026
}

Semantic roles & 50–950 ramp

primary

#4073BD

secondary

#C9B290

accent

#A14FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4073BD

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

Preview Lab → · Contrast checker → · Palette generator →