#4255CC#4255CC

#4255CC is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.6% C 0.184 H 271.3°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#4255CC
RGB	rgb(66, 85, 204)
HSL	hsl(232, 58%, 53%)
HSV	hsv(232, 68%, 80%)
CMYK	cmyk(67.6%, 58.3%, 0%, 20%)
CIE-LAB	lab(41.24, 31.59, -63.97)
CIE-LCH	lch(41.24, 71.35, 296.28°)
OKLab	oklab(50.57% 0.0042 -0.1843)
OKLCH	oklch(50.57% 0.184 271.3)
XYZ	xyz(16.3907, 12.0133, 58.5701)
Luminance	0.1202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255CC #CCB942

analogous

#429ACC #4255CC #7442CC

triadic

#4255CC #CC4255 #55CC42

tetradic

#4255CC #CC429A #CCB942 #42CC74

square

#4255CC #CC429A #CCB942 #42CC74

split-complementary

#4255CC #CC7442 #9ACC42

monochromatic

#1F2B74 #2C3DA4 #4255CC #7280D9 #A2ACE6

Accessibility & contrast

On white

6.17

#4255CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#4255CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255CC

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255CC	#FFFFFF	#000000	##FFFFFF
##4255CC	1.00	6.17	3.40	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D0

Deuteranopia (green-blind)

#005BCA

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4255cc;
/* rgb */ color: rgb(66, 85, 204);
/* oklch */ color: oklch(50.6% 0.184 271.3);

Tailwind

colors: {
  custom: {
    50: '#8784dc',
    500: '#4255cc',
    950: '#000000',
  },
}

SCSS

$custom: #4255cc;
$custom-light: #8784dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4255cc",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 204
  },
  "hsl": {
    "h": 231.739,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.50572,
    "c": 0.18436,
    "h": 271.3
  },
  "luminance": 0.12015
}

Semantic roles & 50–950 ramp

primary

#4255CC

secondary

#D3CB97

accent

#CC47E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4255CC

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

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