#4256CB#4256CB

#4256CB is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.7% C 0.182 H 271.1°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#4256CB
RGB	rgb(66, 86, 203)
HSL	hsl(231, 57%, 53%)
HSV	hsv(231, 67%, 80%)
CMYK	cmyk(67.5%, 57.6%, 0%, 20.4%)
CIE-LAB	lab(41.41, 30.61, -63.11)
CIE-LCH	lch(41.41, 70.14, 295.88°)
OKLab	oklab(50.68% 0.0034 -0.1818)
OKLCH	oklch(50.68% 0.182 271.1)
XYZ	xyz(16.3504, 12.1241, 57.9669)
Luminance	0.1213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4256CB #CBB742

analogous

#429ACB #4256CB #7342CB

triadic

#4256CB #CB4256 #56CB42

tetradic

#4256CB #CB429A #CBB742 #42CB73

square

#4256CB #CB429A #CBB742 #42CB73

split-complementary

#4256CB #CB7342 #9ACB42

monochromatic

#202C73 #2D3EA3 #4256CB #7281D8 #A2ACE5

Accessibility & contrast

On white

6.13

#4256CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#4256CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4256CB

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4256CB	#FFFFFF	#000000	##FFFFFF
##4256CB	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CF

Deuteranopia (green-blind)

#005CC9

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4256cb;
/* rgb */ color: rgb(66, 86, 203);
/* oklch */ color: oklch(50.7% 0.182 271.1);

Tailwind

colors: {
  custom: {
    50: '#8685dc',
    500: '#4256cb',
    950: '#000000',
  },
}

SCSS

$custom: #4256cb;
$custom-light: #8685dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4256cb",
  "rgb": {
    "r": 66,
    "g": 86,
    "b": 203
  },
  "hsl": {
    "h": 231.241,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.50679,
    "c": 0.18179,
    "h": 271.1
  },
  "luminance": 0.12126
}

Semantic roles & 50–950 ramp

primary

#4256CB

secondary

#D2C997

accent

#CA48E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4256CB

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

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