#4263BB#4263BB

#4263BB is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.1% C 0.143 H 266.1°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#4263BB
RGB	rgb(66, 99, 187)
HSL	hsl(224, 48%, 50%)
HSV	hsv(224, 65%, 73%)
CMYK	cmyk(64.7%, 47.1%, 0%, 26.7%)
CIE-LAB	lab(43.75, 16.64, -50.05)
CIE-LCH	lch(43.75, 52.74, 288.39°)
OKLab	oklab(52.1% -0.0097 -0.1432)
OKLCH	oklch(52.1% 0.144 266.1)
XYZ	xyz(15.6752, 13.6683, 48.8163)
Luminance	0.1367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4263BB #BB9A42

analogous

#42A0BB #4263BB #5D42BB

triadic

#4263BB #BB4263 #63BB42

tetradic

#4263BB #BB42A0 #BB9A42 #42BB5D

square

#4263BB #BB42A0 #BB9A42 #42BB5D

split-complementary

#4263BB #BB5D42 #A0BB42

monochromatic

#223361 #324B8E #4263BB #6E88CC #9CADDC

Accessibility & contrast

On white

5.62

#4263BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#4263BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4263BB

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4263BB	#FFFFFF	#000000	##FFFFFF
##4263BB	1.00	5.62	3.73	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#376DBE

Deuteranopia (green-blind)

#2062B9

Tritanopia (blue-blind)

#007786

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4263bb;
/* rgb */ color: rgb(66, 99, 187);
/* oklch */ color: oklch(52.1% 0.143 266.1);

Tailwind

colors: {
  custom: {
    50: '#838ed0',
    500: '#4263bb',
    950: '#000000',
  },
}

SCSS

$custom: #4263bb;
$custom-light: #838ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4263bb",
  "rgb": {
    "r": 66,
    "g": 99,
    "b": 187
  },
  "hsl": {
    "h": 223.636,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.52098,
    "c": 0.1435,
    "h": 266.1
  },
  "luminance": 0.1367
}

Semantic roles & 50–950 ramp

primary

#4263BB

secondary

#C8B991

accent

#B350D7

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4263BB

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

Preview Lab → · Contrast checker → · Palette generator →