#4055CB#4055CB

#4055CB is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.4% C 0.184 H 270.7°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#4055CB
RGB	rgb(64, 85, 203)
HSL	hsl(231, 57%, 52%)
HSV	hsv(231, 68%, 80%)
CMYK	cmyk(68.5%, 58.1%, 0%, 20.4%)
CIE-LAB	lab(41.05, 30.96, -63.70)
CIE-LCH	lch(41.05, 70.82, 295.92°)
OKLab	oklab(50.38% 0.0021 -0.1835)
OKLCH	oklch(50.38% 0.184 270.7)
XYZ	xyz(16.1387, 11.8972, 57.9342)
Luminance	0.1190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4055CB #CBB640

analogous

#409BCB #4055CB #7040CB

triadic

#4055CB #CB4055 #55CB40

tetradic

#4055CB #CB409B #CBB640 #40CB70

square

#4055CB #CB409B #CBB640 #40CB70

split-complementary

#4055CB #CB7040 #9BCB40

monochromatic

#1F2B72 #2C3EA2 #4055CB #7080D8 #A0ABE5

Accessibility & contrast

On white

6.21

#4055CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#4055CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4055CB

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4055CB	#FFFFFF	#000000	##FFFFFF
##4055CB	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067CF

Deuteranopia (green-blind)

#005BC9

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4055cb;
/* rgb */ color: rgb(64, 85, 203);
/* oklch */ color: oklch(50.4% 0.184 270.7);

Tailwind

colors: {
  custom: {
    50: '#8584dc',
    500: '#4055cb',
    950: '#000000',
  },
}

SCSS

$custom: #4055cb;
$custom-light: #8584dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4055cb",
  "rgb": {
    "r": 64,
    "g": 85,
    "b": 203
  },
  "hsl": {
    "h": 230.935,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.50382,
    "c": 0.18356,
    "h": 270.7
  },
  "luminance": 0.11899
}

Semantic roles & 50–950 ramp

primary

#4055CB

secondary

#D2C995

accent

#C947E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4055CB

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

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