#4270CB#4270CB

#4270CB is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.150 H 262.4°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#4270CB
RGB	rgb(66, 112, 203)
HSL	hsl(220, 57%, 53%)
HSV	hsv(220, 67%, 80%)
CMYK	cmyk(67.5%, 44.8%, 0%, 20.4%)
CIE-LAB	lab(48.33, 14.12, -51.94)
CIE-LCH	lch(48.33, 53.83, 285.21°)
OKLab	oklab(55.92% -0.0197 -0.1485)
OKLCH	oklch(55.92% 0.15 262.4)
XYZ	xyz(18.8166, 17.0565, 58.7889)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4270CB #CB9D42

analogous

#42B4CB #4270CB #5942CB

triadic

#4270CB #CB4270 #70CB42

tetradic

#4270CB #CB42B4 #CB9D42 #42CB59

square

#4270CB #CB42B4 #CB9D42 #42CB59

split-complementary

#4270CB #CB5942 #B4CB42

monochromatic

#203C73 #2D54A3 #4270CB #7294D8 #A2B9E5

Accessibility & contrast

On white

4.76

#4270CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#4270CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4270CB

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4270CB	#FFFFFF	#000000	##FFFFFF
##4270CB	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4379CE

Deuteranopia (green-blind)

#2A6DC9

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4270cb;
/* rgb */ color: rgb(66, 112, 203);
/* oklch */ color: oklch(55.9% 0.150 262.4);

Tailwind

colors: {
  custom: {
    50: '#8598db',
    500: '#4270cb',
    950: '#000000',
  },
}

SCSS

$custom: #4270cb;
$custom-light: #8598db;
$custom-dark: #000000;

JSON

{
  "hex": "#4270cb",
  "rgb": {
    "r": 66,
    "g": 112,
    "b": 203
  },
  "hsl": {
    "h": 219.854,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.55923,
    "c": 0.14985,
    "h": 262.4
  },
  "luminance": 0.17058
}

Semantic roles & 50–950 ramp

primary

#4270CB

secondary

#D2BE97

accent

#AD48E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4270CB

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

Preview Lab → · Contrast checker → · Palette generator →