#4255C4#4255C4

#4255C4 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.9% C 0.174 H 271.3°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#4255C4
RGB	rgb(66, 85, 196)
HSL	hsl(231, 52%, 51%)
HSV	hsv(231, 66%, 77%)
CMYK	cmyk(66.3%, 56.6%, 0%, 23.1%)
CIE-LAB	lab(40.64, 28.78, -60.31)
CIE-LCH	lch(40.64, 66.83, 295.51°)
OKLab	oklab(49.94% 0.004 -0.1735)
OKLCH	oklch(49.94% 0.174 271.3)
XYZ	xyz(15.4557, 11.6394, 53.6460)
Luminance	0.1164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255C4 #C4B142

analogous

#4296C4 #4255C4 #7042C4

triadic

#4255C4 #C44255 #55C442

tetradic

#4255C4 #C44296 #C4B142 #42C470

square

#4255C4 #C44296 #C4B142 #42C470

split-complementary

#4255C4 #C47042 #96C442

monochromatic

#212C6A #303F99 #4255C4 #717FD3 #9FA9E1

Accessibility & contrast

On white

6.31

#4255C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#4255C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255C4

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255C4	#FFFFFF	#000000	##FFFFFF
##4255C4	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C8

Deuteranopia (green-blind)

#005AC2

Tritanopia (blue-blind)

#007084

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4255c4;
/* rgb */ color: rgb(66, 85, 196);
/* oklch */ color: oklch(49.9% 0.174 271.3);

Tailwind

colors: {
  custom: {
    50: '#8584d7',
    500: '#4255c4',
    950: '#000000',
  },
}

SCSS

$custom: #4255c4;
$custom-light: #8584d7;
$custom-dark: #000000;

JSON

{
  "hex": "#4255c4",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 196
  },
  "hsl": {
    "h": 231.231,
    "s": 52.419,
    "l": 51.373
  },
  "oklch": {
    "l": 0.49936,
    "c": 0.1736,
    "h": 271.3
  },
  "luminance": 0.11641
}

Semantic roles & 50–950 ramp

primary

#4255C4

secondary

#CEC594

accent

#C74CDC

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #4255C4

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

Preview Lab → · Contrast checker → · Palette generator →