#4255AF#4255AF

#4255AF is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.4% C 0.144 H 271.1°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#4255AF
RGB	rgb(66, 85, 175)
HSL	hsl(230, 45%, 47%)
HSV	hsv(230, 62%, 69%)
CMYK	cmyk(62.3%, 51.4%, 0%, 31.4%)
CIE-LAB	lab(39.16, 21.39, -50.41)
CIE-LCH	lch(39.16, 54.76, 293.00°)
OKLab	oklab(48.35% 0.0028 -0.1444)
OKLCH	oklch(48.35% 0.144 271.1)
XYZ	xyz(13.2305, 10.7493, 41.9267)
Luminance	0.1075 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255AF #AF9C42

analogous

#428CAF #4255AF #6542AF

triadic

#4255AF #AF4255 #55AF42

tetradic

#4255AF #AF428C #AF9C42 #42AF65

square

#4255AF #AF428C #AF9C42 #42AF65

split-complementary

#4255AF #AF6542 #8CAF42

monochromatic

#202A56 #313F83 #4255AF #6878C6 #95A0D7

Accessibility & contrast

On white

6.67

#4255AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#4255AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255AF

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255AF	#FFFFFF	#000000	##FFFFFF
##4255AF	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2261B2

Deuteranopia (green-blind)

#0258AD

Tritanopia (blue-blind)

#006A7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4255af;
/* rgb */ color: rgb(66, 85, 175);
/* oklch */ color: oklch(48.4% 0.144 271.1);

Tailwind

colors: {
  custom: {
    50: '#8184c7',
    500: '#4255af',
    950: '#000000',
  },
}

SCSS

$custom: #4255af;
$custom-light: #8184c7;
$custom-dark: #000000;

JSON

{
  "hex": "#4255af",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 175
  },
  "hsl": {
    "h": 229.541,
    "s": 45.228,
    "l": 47.255
  },
  "oklch": {
    "l": 0.48352,
    "c": 0.14445,
    "h": 271.1
  },
  "luminance": 0.1075
}

Semantic roles & 50–950 ramp

primary

#4255AF

secondary

#C2B98A

accent

#BE53D5

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4255AF

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

Preview Lab → · Contrast checker → · Palette generator →