#4255BD#4255BD

#4255BD is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.4% C 0.164 H 271.3°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#4255BD
RGB	rgb(66, 85, 189)
HSL	hsl(231, 48%, 50%)
HSV	hsv(231, 65%, 74%)
CMYK	cmyk(65.1%, 55%, 0%, 25.9%)
CIE-LAB	lab(40.13, 26.32, -57.06)
CIE-LCH	lch(40.13, 62.84, 294.76°)
OKLab	oklab(49.39% 0.0038 -0.164)
OKLCH	oklch(49.39% 0.164 271.3)
XYZ	xyz(14.6775, 11.3281, 49.5473)
Luminance	0.1133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255BD #BDAA42

analogous

#4292BD #4255BD #6D42BD

triadic

#4255BD #BD4255 #55BD42

tetradic

#4255BD #BD4292 #BDAA42 #42BD6D

square

#4255BD #BD4292 #BDAA42 #42BD6D

split-complementary

#4255BD #BD6D42 #92BD42

monochromatic

#222C62 #324190 #4255BD #6F7ECD #9DA7DD

Accessibility & contrast

On white

6.43

#4255BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#4255BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255BD

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255BD	#FFFFFF	#000000	##FFFFFF
##4255BD	1.00	6.43	3.27	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C1

Deuteranopia (green-blind)

#0059BB

Tritanopia (blue-blind)

#006E81

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #4255bd;
/* rgb */ color: rgb(66, 85, 189);
/* oklch */ color: oklch(49.4% 0.164 271.3);

Tailwind

colors: {
  custom: {
    50: '#8484d2',
    500: '#4255bd',
    950: '#000000',
  },
}

SCSS

$custom: #4255bd;
$custom-light: #8484d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4255bd",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 189
  },
  "hsl": {
    "h": 230.732,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.49394,
    "c": 0.16403,
    "h": 271.3
  },
  "luminance": 0.11329
}

Semantic roles & 50–950 ramp

primary

#4255BD

secondary

#C9C092

accent

#C350D8

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #4255BD

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

Preview Lab → · Contrast checker → · Palette generator →