#4255B2#4255B2

#4255B2 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.6% C 0.149 H 271.2°. Best body text is #FFFFFF at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#4255B2
RGB	rgb(66, 85, 178)
HSL	hsl(230, 46%, 48%)
HSV	hsv(230, 63%, 70%)
CMYK	cmyk(62.9%, 52.2%, 0%, 30.2%)
CIE-LAB	lab(39.36, 22.45, -51.85)
CIE-LCH	lch(39.36, 56.50, 293.41°)
OKLab	oklab(48.57% 0.003 -0.1487)
OKLCH	oklch(48.57% 0.149 271.2)
XYZ	xyz(13.5285, 10.8685, 43.4957)
Luminance	0.1087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255B2 #B29F42

analogous

#428DB2 #4255B2 #6742B2

triadic

#4255B2 #B24255 #55B242

tetradic

#4255B2 #B2428D #B29F42 #42B267

square

#4255B2 #B2428D #B29F42 #42B267

split-complementary

#4255B2 #B26742 #8DB242

monochromatic

#212A59 #314085 #4255B2 #6A7AC8 #96A1D8

Accessibility & contrast

On white

6.62

#4255B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#4255B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255B2

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255B2	#FFFFFF	#000000	##FFFFFF
##4255B2	1.00	6.62	3.17	6.62
#FFFFFF	6.62	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E62B5

Deuteranopia (green-blind)

#0058B0

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4255b2;
/* rgb */ color: rgb(66, 85, 178);
/* oklch */ color: oklch(48.6% 0.149 271.2);

Tailwind

colors: {
  custom: {
    50: '#8284ca',
    500: '#4255b2',
    950: '#000000',
  },
}

SCSS

$custom: #4255b2;
$custom-light: #8284ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4255b2",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 178
  },
  "hsl": {
    "h": 229.821,
    "s": 45.902,
    "l": 47.843
  },
  "oklch": {
    "l": 0.4857,
    "c": 0.14869,
    "h": 271.2
  },
  "luminance": 0.1087
}

Semantic roles & 50–950 ramp

primary

#4255B2

secondary

#C4BA8C

accent

#BF52D6

background

#F8F8FC

surface

#F0EFF8

border

#CBCAD1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4255B2

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

Preview Lab → · Contrast checker → · Palette generator →