#4273CD#4273CD

#4273CD is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.7% C 0.149 H 261.4°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#4273CD
RGB	rgb(66, 115, 205)
HSL	hsl(219, 58%, 53%)
HSV	hsv(219, 68%, 80%)
CMYK	cmyk(67.8%, 43.9%, 0%, 19.6%)
CIE-LAB	lab(49.28, 12.96, -51.56)
CIE-LCH	lch(49.28, 53.16, 284.11°)
OKLab	oklab(56.69% -0.0222 -0.1474)
OKLCH	oklch(56.69% 0.149 261.4)
XYZ	xyz(19.3930, 17.8255, 60.1644)
Luminance	0.1783 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273CD #CD9C42

analogous

#42B8CD #4273CD #5642CD

triadic

#4273CD #CD4273 #73CD42

tetradic

#4273CD #CD42B8 #CD9C42 #42CD56

square

#4273CD #CD42B8 #CD9C42 #42CD56

split-complementary

#4273CD #CD5642 #B8CD42

monochromatic

#1F3E76 #2C57A6 #4273CD #7297DA #A3BBE7

Accessibility & contrast

On white

4.60

#4273CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#4273CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4273CD

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273CD	#FFFFFF	#000000	##FFFFFF
##4273CD	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#477CD0

Deuteranopia (green-blind)

#2F6FCB

Tritanopia (blue-blind)

#008896

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4273cd;
/* rgb */ color: rgb(66, 115, 205);
/* oklch */ color: oklch(56.7% 0.149 261.4);

Tailwind

colors: {
  custom: {
    50: '#859add',
    500: '#4273cd',
    950: '#000000',
  },
}

SCSS

$custom: #4273cd;
$custom-light: #859add;
$custom-dark: #000000;

JSON

{
  "hex": "#4273cd",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 205
  },
  "hsl": {
    "h": 218.849,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.56695,
    "c": 0.14904,
    "h": 261.4
  },
  "luminance": 0.17827
}

Semantic roles & 50–950 ramp

primary

#4273CD

secondary

#D3BE97

accent

#AB46E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4273CD

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

Preview Lab → · Contrast checker → · Palette generator →