#4255CF#4255CF

#4255CF is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.8% C 0.188 H 271.3°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#4255CF
RGB	rgb(66, 85, 207)
HSL	hsl(232, 59%, 54%)
HSV	hsv(232, 68%, 81%)
CMYK	cmyk(68.1%, 58.9%, 0%, 18.8%)
CIE-LAB	lab(41.47, 32.64, -65.33)
CIE-LCH	lch(41.47, 73.03, 296.55°)
OKLab	oklab(50.82% 0.0042 -0.1883)
OKLCH	oklch(50.82% 0.188 271.3)
XYZ	xyz(16.7539, 12.1586, 60.4833)
Luminance	0.1216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255CF #CFBC42

analogous

#429BCF #4255CF #7542CF

triadic

#4255CF #CF4255 #55CF42

tetradic

#4255CF #CF429B #CFBC42 #42CF75

square

#4255CF #CF429B #CFBC42 #42CF75

split-complementary

#4255CF #CF7542 #9BCF42

monochromatic

#1F2B78 #2B3CA9 #4255CF #7381DB #A4ADE8

Accessibility & contrast

On white

6.12

#4255CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#4255CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255CF

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255CF	#FFFFFF	#000000	##FFFFFF
##4255CF	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D3

Deuteranopia (green-blind)

#005CCD

Tritanopia (blue-blind)

#00738A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4255cf;
/* rgb */ color: rgb(66, 85, 207);
/* oklch */ color: oklch(50.8% 0.188 271.3);

Tailwind

colors: {
  custom: {
    50: '#8784df',
    500: '#4255cf',
    950: '#000000',
  },
}

SCSS

$custom: #4255cf;
$custom-light: #8784df;
$custom-dark: #000000;

JSON

{
  "hex": "#4255cf",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 207
  },
  "hsl": {
    "h": 231.915,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.50815,
    "c": 0.18834,
    "h": 271.3
  },
  "luminance": 0.1216
}

Semantic roles & 50–950 ramp

primary

#4255CF

secondary

#D5CC98

accent

#CD45E3

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4255CF

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

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