#4273FF#4273FF

#4273FF is a mid, highly saturated blue. Relative luminance 0.206; OKLCH L 60.2% C 0.215 H 265.6°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#4273FF
RGB	rgb(66, 115, 255)
HSL	hsl(224, 100%, 63%)
HSV	hsv(224, 74%, 100%)
CMYK	cmyk(74.1%, 54.9%, 0%, 0%)
CIE-LAB	lab(52.55, 30.85, -74.37)
CIE-LCH	lch(52.55, 80.51, 292.53°)
OKLab	oklab(60.22% -0.0164 -0.2145)
OKLCH	oklch(60.22% 0.215 265.6)
XYZ	xyz(26.4211, 20.6368, 97.1792)
Luminance	0.2064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4273FF #FFCE42

analogous

#42D2FF #4273FF #6F42FF

triadic

#4273FF #FF4273 #73FF42

tetradic

#4273FF #FF42D2 #FFCE42 #42FF6F

square

#4273FF #FF42D2 #FFCE42 #42FF6F

split-complementary

#4273FF #FF6F42 #D2FF42

monochromatic

#0033C7 #0546FF #4273FF #7FA0FF #BCCEFF

Accessibility & contrast

On white

4.10

#4273FF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#4273FF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4273FF

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4273FF	#FFFFFF	#000000	##000000
##4273FF	1.00	4.10	5.13	5.13
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.13	21.00	1.00	1.00
##000000	5.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0086FF

Deuteranopia (green-blind)

#0075FC

Tritanopia (blue-blind)

#0096AE

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #4273ff;
/* rgb */ color: rgb(66, 115, 255);
/* oklch */ color: oklch(60.2% 0.215 265.6);

Tailwind

colors: {
  custom: {
    50: '#8f9aff',
    500: '#4273ff',
    950: '#000000',
  },
}

SCSS

$custom: #4273ff;
$custom-light: #8f9aff;
$custom-dark: #000000;

JSON

{
  "hex": "#4273ff",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 255
  },
  "hsl": {
    "h": 224.444,
    "s": 100,
    "l": 62.941
  },
  "oklch": {
    "l": 0.60223,
    "c": 0.21511,
    "h": 265.6
  },
  "luminance": 0.2064
}

Semantic roles & 50–950 ramp

primary

#4273FF

secondary

#F0DFAC

accent

#AA00E6

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E18

muted

#7E7E86

Preview Lab

Preview with #4273FF

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

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