#4255BC#4255BC

#4255BC is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.3% C 0.163 H 271.3°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#4255BC
RGB	rgb(66, 85, 188)
HSL	hsl(231, 48%, 50%)
HSV	hsv(231, 65%, 74%)
CMYK	cmyk(64.9%, 54.8%, 0%, 26.3%)
CIE-LAB	lab(40.06, 25.97, -56.59)
CIE-LCH	lch(40.06, 62.27, 294.65°)
OKLab	oklab(49.32% 0.0037 -0.1626)
OKLCH	oklch(49.32% 0.163 271.3)
XYZ	xyz(14.5693, 11.2848, 48.9776)
Luminance	0.1129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255BC #BCA942

analogous

#4292BC #4255BC #6C42BC

triadic

#4255BC #BC4255 #55BC42

tetradic

#4255BC #BC4292 #BCA942 #42BC6C

square

#4255BC #BC4292 #BCA942 #42BC6C

split-complementary

#4255BC #BC6C42 #92BC42

monochromatic

#222C61 #32418F #4255BC #6F7DCC #9CA6DC

Accessibility & contrast

On white

6.45

#4255BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#4255BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255BC

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255BC	#FFFFFF	#000000	##FFFFFF
##4255BC	1.00	6.45	3.26	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0364C0

Deuteranopia (green-blind)

#0059BA

Tritanopia (blue-blind)

#006E80

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4255bc;
/* rgb */ color: rgb(66, 85, 188);
/* oklch */ color: oklch(49.3% 0.163 271.3);

Tailwind

colors: {
  custom: {
    50: '#8384d1',
    500: '#4255bc',
    950: '#000000',
  },
}

SCSS

$custom: #4255bc;
$custom-light: #8384d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4255bc",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 188
  },
  "hsl": {
    "h": 230.656,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.49317,
    "c": 0.16265,
    "h": 271.3
  },
  "luminance": 0.11286
}

Semantic roles & 50–950 ramp

primary

#4255BC

secondary

#C9C091

accent

#C350D8

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #4255BC

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

Preview Lab → · Contrast checker → · Palette generator →