#4255C5#4255C5

#4255C5 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.0% C 0.175 H 271.3°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#4255C5
RGB	rgb(66, 85, 197)
HSL	hsl(231, 53%, 52%)
HSV	hsv(231, 66%, 77%)
CMYK	cmyk(66.5%, 56.9%, 0%, 22.7%)
CIE-LAB	lab(40.71, 29.14, -60.77)
CIE-LCH	lch(40.71, 67.40, 295.61°)
OKLab	oklab(50.02% 0.0041 -0.1749)
OKLCH	oklch(50.02% 0.175 271.3)
XYZ	xyz(15.5699, 11.6850, 54.2474)
Luminance	0.1169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255C5 #C5B242

analogous

#4297C5 #4255C5 #7142C5

triadic

#4255C5 #C54255 #55C542

tetradic

#4255C5 #C54297 #C5B242 #42C571

square

#4255C5 #C54297 #C5B242 #42C571

split-complementary

#4255C5 #C57142 #97C542

monochromatic

#212C6C #2F3F9A #4255C5 #717FD3 #A0A9E2

Accessibility & contrast

On white

6.29

#4255C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#4255C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255C5

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255C5	#FFFFFF	#000000	##FFFFFF
##4255C5	1.00	6.29	3.34	6.29
#FFFFFF	6.29	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C9

Deuteranopia (green-blind)

#005AC3

Tritanopia (blue-blind)

#007085

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4255c5;
/* rgb */ color: rgb(66, 85, 197);
/* oklch */ color: oklch(50.0% 0.175 271.3);

Tailwind

colors: {
  custom: {
    50: '#8584d7',
    500: '#4255c5',
    950: '#000000',
  },
}

SCSS

$custom: #4255c5;
$custom-light: #8584d7;
$custom-dark: #000000;

JSON

{
  "hex": "#4255c5",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 197
  },
  "hsl": {
    "h": 231.298,
    "s": 53.036,
    "l": 51.569
  },
  "oklch": {
    "l": 0.50015,
    "c": 0.17496,
    "h": 271.3
  },
  "luminance": 0.11686
}

Semantic roles & 50–950 ramp

primary

#4255C5

secondary

#CEC695

accent

#C74BDC

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #4255C5

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

Preview Lab → · Contrast checker → · Palette generator →