#4063AB#4063AB

#4063AB is a mid, vivid blue. Relative luminance 0.130; OKLCH L 50.9% C 0.122 H 263.2°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#4063AB
RGB	rgb(64, 99, 171)
HSL	hsl(220, 46%, 46%)
HSV	hsv(220, 63%, 67%)
CMYK	cmyk(62.6%, 42.1%, 0%, 32.9%)
CIE-LAB	lab(42.69, 10.60, -42.39)
CIE-LCH	lch(42.69, 43.69, 284.04°)
OKLab	oklab(50.94% -0.0144 -0.1207)
OKLCH	oklch(50.94% 0.122 263.2)
XYZ	xyz(13.9243, 12.9527, 40.2865)
Luminance	0.1295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4063AB #AB8840

analogous

#4098AB #4063AB #5240AB

triadic

#4063AB #AB4063 #63AB40

tetradic

#4063AB #AB4098 #AB8840 #40AB52

square

#4063AB #AB4098 #AB8840 #40AB52

split-complementary

#4063AB #AB5240 #98AB40

monochromatic

#1F2F52 #2F497E #4063AB #6383C5 #90A7D5

Accessibility & contrast

On white

5.85

#4063AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#4063AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4063AB

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4063AB	#FFFFFF	#000000	##FFFFFF
##4063AB	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#436AAE

Deuteranopia (green-blind)

#3360A9

Tritanopia (blue-blind)

#00737E

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4063ab;
/* rgb */ color: rgb(64, 99, 171);
/* oklch */ color: oklch(50.9% 0.122 263.2);

Tailwind

colors: {
  custom: {
    50: '#7f8fc4',
    500: '#4063ab',
    950: '#000000',
  },
}

SCSS

$custom: #4063ab;
$custom-light: #7f8fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#4063ab",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 171
  },
  "hsl": {
    "h": 220.374,
    "s": 45.532,
    "l": 46.078
  },
  "oklch": {
    "l": 0.50944,
    "c": 0.12155,
    "h": 263.2
  },
  "luminance": 0.12954
}

Semantic roles & 50–950 ramp

primary

#4063AB

secondary

#C1AD86

accent

#AA53D5

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #4063AB

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

Preview Lab → · Contrast checker → · Palette generator →