#4255CB#4255CB

#4255CB is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.5% C 0.183 H 271.3°. Best body text is #FFFFFF at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#4255CB
RGB	rgb(66, 85, 203)
HSL	hsl(232, 57%, 53%)
HSV	hsv(232, 67%, 80%)
CMYK	cmyk(67.5%, 58.1%, 0%, 20.4%)
CIE-LAB	lab(41.16, 31.24, -63.52)
CIE-LCH	lch(41.16, 70.78, 296.19°)
OKLab	oklab(50.49% 0.0042 -0.183)
OKLCH	oklch(50.49% 0.183 271.3)
XYZ	xyz(16.2711, 11.9655, 57.9404)
Luminance	0.1197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255CB #CBB842

analogous

#4299CB #4255CB #7442CB

triadic

#4255CB #CB4255 #55CB42

tetradic

#4255CB #CB4299 #CBB842 #42CB74

square

#4255CB #CB4299 #CBB842 #42CB74

split-complementary

#4255CB #CB7442 #99CB42

monochromatic

#202B73 #2D3DA3 #4255CB #7280D8 #A2ABE5

Accessibility & contrast

On white

6.19

#4255CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#4255CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255CB

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255CB	#FFFFFF	#000000	##FFFFFF
##4255CB	1.00	6.19	3.39	6.19
#FFFFFF	6.19	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.19	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: #4255cb;
/* rgb */ color: rgb(66, 85, 203);
/* oklch */ color: oklch(50.5% 0.183 271.3);

Tailwind

colors: {
  custom: {
    50: '#8684dc',
    500: '#4255cb',
    950: '#000000',
  },
}

SCSS

$custom: #4255cb;
$custom-light: #8684dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4255cb",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 203
  },
  "hsl": {
    "h": 231.679,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.50492,
    "c": 0.18302,
    "h": 271.3
  },
  "luminance": 0.11967
}

Semantic roles & 50–950 ramp

primary

#4255CB

secondary

#D2CA97

accent

#CB48E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4255CB

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

Preview Lab → · Contrast checker → · Palette generator →