#4263CB#4263CB

#4263CB is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.2% C 0.166 H 267.3°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#4263CB
RGB	rgb(66, 99, 203)
HSL	hsl(226, 57%, 53%)
HSV	hsv(226, 67%, 80%)
CMYK	cmyk(67.5%, 51.2%, 0%, 20.4%)
CIE-LAB	lab(44.79, 22.34, -57.64)
CIE-LCH	lch(44.79, 61.81, 291.18°)
OKLab	oklab(53.22% -0.0078 -0.1655)
OKLCH	oklch(53.22% 0.166 267.3)
XYZ	xyz(17.4844, 14.3920, 58.3448)
Luminance	0.1439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4263CB #CBAA42

analogous

#42A8CB #4263CB #6542CB

triadic

#4263CB #CB4263 #63CB42

tetradic

#4263CB #CB42A8 #CBAA42 #42CB65

square

#4263CB #CB42A8 #CBAA42 #42CB65

split-complementary

#4263CB #CB6542 #A8CB42

monochromatic

#203473 #2D49A3 #4263CB #728BD8 #A2B2E5

Accessibility & contrast

On white

5.41

#4263CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#4263CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4263CB

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4263CB	#FFFFFF	#000000	##FFFFFF
##4263CB	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2471CF

Deuteranopia (green-blind)

#0064C9

Tritanopia (blue-blind)

#007C8D

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #4263cb;
/* rgb */ color: rgb(66, 99, 203);
/* oklch */ color: oklch(53.2% 0.166 267.3);

Tailwind

colors: {
  custom: {
    50: '#858edb',
    500: '#4263cb',
    950: '#000000',
  },
}

SCSS

$custom: #4263cb;
$custom-light: #858edb;
$custom-dark: #000000;

JSON

{
  "hex": "#4263cb",
  "rgb": {
    "r": 66,
    "g": 99,
    "b": 203
  },
  "hsl": {
    "h": 225.547,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.53219,
    "c": 0.16567,
    "h": 267.3
  },
  "luminance": 0.14394
}

Semantic roles & 50–950 ramp

primary

#4263CB

secondary

#D2C497

accent

#BB48E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #4263CB

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

Preview Lab → · Contrast checker → · Palette generator →