#4055AB#4055AB

#4055AB is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.9% C 0.139 H 270.1°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#4055AB
RGB	rgb(64, 85, 171)
HSL	hsl(228, 46%, 46%)
HSV	hsv(228, 63%, 67%)
CMYK	cmyk(62.6%, 50.3%, 0%, 32.9%)
CIE-LAB	lab(38.77, 19.61, -48.67)
CIE-LCH	lch(38.77, 52.47, 291.95°)
OKLab	oklab(47.94% 0.0003 -0.1393)
OKLCH	oklch(47.94% 0.139 270.1)
XYZ	xyz(12.7111, 10.5262, 39.8821)
Luminance	0.1053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4055AB #AB9640

analogous

#408AAB #4055AB #6040AB

triadic

#4055AB #AB4055 #55AB40

tetradic

#4055AB #AB408A #AB9640 #40AB60

square

#4055AB #AB408A #AB9640 #40AB60

split-complementary

#4055AB #AB6040 #8AAB40

monochromatic

#1F2952 #2F3F7E #4055AB #6377C5 #909ED5

Accessibility & contrast

On white

6.76

#4055AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#4055AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4055AB

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4055AB	#FFFFFF	#000000	##FFFFFF
##4055AB	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2760AE

Deuteranopia (green-blind)

#0D57A9

Tritanopia (blue-blind)

#006978

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #4055ab;
/* rgb */ color: rgb(64, 85, 171);
/* oklch */ color: oklch(47.9% 0.139 270.1);

Tailwind

colors: {
  custom: {
    50: '#7f84c5',
    500: '#4055ab',
    950: '#000000',
  },
}

SCSS

$custom: #4055ab;
$custom-light: #7f84c5;
$custom-dark: #000000;

JSON

{
  "hex": "#4055ab",
  "rgb": {
    "r": 64,
    "g": 85,
    "b": 171
  },
  "hsl": {
    "h": 228.224,
    "s": 45.532,
    "l": 46.078
  },
  "oklch": {
    "l": 0.47944,
    "c": 0.13934,
    "h": 270.1
  },
  "luminance": 0.10527
}

Semantic roles & 50–950 ramp

primary

#4055AB

secondary

#C1B586

accent

#BC53D5

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4055AB

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

Preview Lab → · Contrast checker → · Palette generator →