#1B52B4#1B52B4

#1B52B4 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.4% C 0.166 H 261.0°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#1B52B4
RGB	rgb(27, 82, 180)
HSL	hsl(218, 74%, 41%)
HSV	hsv(218, 85%, 71%)
CMYK	cmyk(85%, 54.4%, 0%, 29.4%)
CIE-LAB	lab(37.04, 20.12, -56.86)
CIE-LCH	lch(37.04, 60.31, 289.49°)
OKLab	oklab(46.41% -0.026 -0.1641)
OKLCH	oklch(46.41% 0.166 261)
XYZ	xyz(11.7045, 9.5614, 44.3998)
Luminance	0.0956 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B52B4 #B47D1B

analogous

#1B9EB4 #1B52B4 #301BB4

triadic

#1B52B4 #B41B52 #52B41B

tetradic

#1B52B4 #B41B9E #B47D1B #1BB430

square

#1B52B4 #B41B9E #B47D1B #1BB430

split-complementary

#1B52B4 #B4301B #9EB41B

monochromatic

#0B224A #133A7F #1B52B4 #2D6DDF #6292E7

Accessibility & contrast

On white

7.21

#1B52B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#1B52B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B52B4

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B52B4	#FFFFFF	#000000	##FFFFFF
##1B52B4	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB7

Deuteranopia (green-blind)

#0051B2

Tritanopia (blue-blind)

#006A7B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b52b4;
/* rgb */ color: rgb(27, 82, 180);
/* oklch */ color: oklch(46.4% 0.166 261.0);

Tailwind

colors: {
  custom: {
    50: '#7481cb',
    500: '#1b52b4',
    950: '#000000',
  },
}

SCSS

$custom: #1b52b4;
$custom-light: #7481cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b52b4",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 180
  },
  "hsl": {
    "h": 218.431,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.46413,
    "c": 0.16618,
    "h": 261
  },
  "luminance": 0.09563
}

Semantic roles & 50–950 ramp

primary

#1B52B4

secondary

#CCA55F

accent

#AE37F1

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1B52B4

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

Preview Lab → · Contrast checker → · Palette generator →