#4063DB#4063DB

#4063DB is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.3% C 0.188 H 267.4°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#4063DB
RGB	rgb(64, 99, 219)
HSL	hsl(226, 68%, 55%)
HSV	hsv(226, 71%, 86%)
CMYK	cmyk(70.8%, 54.8%, 0%, 14.1%)
CIE-LAB	lab(45.81, 27.77, -65.15)
CIE-LCH	lch(45.81, 70.82, 293.09°)
OKLab	oklab(54.31% -0.0084 -0.1876)
OKLCH	oklch(54.31% 0.188 267.4)
XYZ	xyz(19.3579, 15.1261, 68.9035)
Luminance	0.1513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4063DB #DBB840

analogous

#40B0DB #4063DB #6B40DB

triadic

#4063DB #DB4063 #63DB40

tetradic

#4063DB #DB40B0 #DBB840 #40DB6B

square

#4063DB #DB40B0 #DBB840 #40DB6B

split-complementary

#4063DB #DB6B40 #B0DB40

monochromatic

#193287 #2345BB #4063DB #738DE5 #A7B7EE

Accessibility & contrast

On white

5.22

#4063DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#4063DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4063DB

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4063DB	#FFFFFF	#000000	##FFFFFF
##4063DB	1.00	5.22	4.03	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074DF

Deuteranopia (green-blind)

#0066D9

Tritanopia (blue-blind)

#008095

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #4063db;
/* rgb */ color: rgb(64, 99, 219);
/* oklch */ color: oklch(54.3% 0.188 267.4);

Tailwind

colors: {
  custom: {
    50: '#888ee7',
    500: '#4063db',
    950: '#000000',
  },
}

SCSS

$custom: #4063db;
$custom-light: #888ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#4063db",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 219
  },
  "hsl": {
    "h": 226.452,
    "s": 68.282,
    "l": 55.49
  },
  "oklch": {
    "l": 0.54313,
    "c": 0.18781,
    "h": 267.4
  },
  "luminance": 0.15128
}

Semantic roles & 50–950 ramp

primary

#4063DB

secondary

#DCCD9B

accent

#C43DEB

background

#F9F8FE

surface

#F1F0FD

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #4063DB

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

Preview Lab → · Contrast checker → · Palette generator →