#4063B3#4063B3

#4063B3 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.5% C 0.133 H 264.4°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#4063B3
RGB	rgb(64, 99, 179)
HSL	hsl(222, 47%, 48%)
HSV	hsv(222, 64%, 70%)
CMYK	cmyk(64.2%, 44.7%, 0%, 29.8%)
CIE-LAB	lab(43.16, 13.44, -46.33)
CIE-LCH	lch(43.16, 48.24, 286.17°)
OKLab	oklab(51.46% -0.0129 -0.1323)
OKLCH	oklch(51.46% 0.133 264.4)
XYZ	xyz(14.7100, 13.2670, 44.4247)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4063B3 #B39040

analogous

#409CB3 #4063B3 #5640B3

triadic

#4063B3 #B34063 #63B340

tetradic

#4063B3 #B3409C #B39040 #40B356

square

#4063B3 #B3409C #B39040 #40B356

split-complementary

#4063B3 #B35640 #9CB340

monochromatic

#203159 #304A86 #4063B3 #6785C9 #94A9D9

Accessibility & contrast

On white

5.75

#4063B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#4063B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4063B3

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4063B3	#FFFFFF	#000000	##FFFFFF
##4063B3	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6CB6

Deuteranopia (green-blind)

#2A61B1

Tritanopia (blue-blind)

#007582

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #4063b3;
/* rgb */ color: rgb(64, 99, 179);
/* oklch */ color: oklch(51.5% 0.133 264.4);

Tailwind

colors: {
  custom: {
    50: '#808eca',
    500: '#4063b3',
    950: '#000000',
  },
}

SCSS

$custom: #4063b3;
$custom-light: #808eca;
$custom-dark: #000000;

JSON

{
  "hex": "#4063b3",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 179
  },
  "hsl": {
    "h": 221.739,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.5146,
    "c": 0.13291,
    "h": 264.4
  },
  "luminance": 0.13268
}

Semantic roles & 50–950 ramp

primary

#4063B3

secondary

#C4B38A

accent

#AE51D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #4063B3

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

Preview Lab → · Contrast checker → · Palette generator →