#4273CA#4273CA

#4273CA is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.145 H 261.0°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#4273CA
RGB	rgb(66, 115, 202)
HSL	hsl(218, 56%, 53%)
HSV	hsv(218, 67%, 79%)
CMYK	cmyk(67.3%, 43.1%, 0%, 20.8%)
CIE-LAB	lab(49.11, 11.89, -50.13)
CIE-LCH	lch(49.11, 51.52, 283.34°)
OKLab	oklab(56.5% -0.0228 -0.1432)
OKLCH	oklch(56.5% 0.145 261)
XYZ	xyz(19.0344, 17.6821, 58.2755)
Luminance	0.1768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273CA #CA9942

analogous

#42B7CA #4273CA #5542CA

triadic

#4273CA #CA4273 #73CA42

tetradic

#4273CA #CA42B7 #CA9942 #42CA55

square

#4273CA #CA42B7 #CA9942 #42CA55

split-complementary

#4273CA #CA5542 #B7CA42

monochromatic

#203D72 #2D57A2 #4273CA #7296D7 #A2BAE5

Accessibility & contrast

On white

4.63

#4273CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#4273CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4273CA

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273CA	#FFFFFF	#000000	##FFFFFF
##4273CA	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7BCD

Deuteranopia (green-blind)

#336FC8

Tritanopia (blue-blind)

#008794

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4273ca;
/* rgb */ color: rgb(66, 115, 202);
/* oklch */ color: oklch(56.5% 0.145 261.0);

Tailwind

colors: {
  custom: {
    50: '#859ada',
    500: '#4273ca',
    950: '#000000',
  },
}

SCSS

$custom: #4273ca;
$custom-light: #859ada;
$custom-dark: #000000;

JSON

{
  "hex": "#4273ca",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 202
  },
  "hsl": {
    "h": 218.382,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.56503,
    "c": 0.14496,
    "h": 261
  },
  "luminance": 0.17684
}

Semantic roles & 50–950 ramp

primary

#4273CA

secondary

#D1BC96

accent

#A948DF

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4273CA

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

Preview Lab → · Contrast checker → · Palette generator →