#1B52B3#1B52B3

#1B52B3 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.3% C 0.165 H 260.9°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B52B3
RGB	rgb(27, 82, 179)
HSL	hsl(218, 74%, 40%)
HSV	hsv(218, 85%, 70%)
CMYK	cmyk(84.9%, 54.2%, 0%, 29.8%)
CIE-LAB	lab(36.97, 19.72, -56.39)
CIE-LCH	lch(36.97, 59.74, 289.28°)
OKLab	oklab(46.33% -0.0261 -0.1628)
OKLCH	oklch(46.33% 0.165 260.9)
XYZ	xyz(11.6030, 9.5208, 43.8652)
Luminance	0.0952 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B52B3 #B37C1B

analogous

#1B9EB3 #1B52B3 #301BB3

triadic

#1B52B3 #B31B52 #52B31B

tetradic

#1B52B3 #B31B9E #B37C1B #1BB330

square

#1B52B3 #B31B9E #B37C1B #1BB330

split-complementary

#1B52B3 #B3301B #9EB31B

monochromatic

#0B2149 #133A7E #1B52B3 #2C6DDF #6192E7

Accessibility & contrast

On white

7.23

#1B52B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#1B52B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B52B3

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B52B3	#FFFFFF	#000000	##FFFFFF
##1B52B3	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB6

Deuteranopia (green-blind)

#0050B1

Tritanopia (blue-blind)

#006A7A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b52b3;
/* rgb */ color: rgb(27, 82, 179);
/* oklch */ color: oklch(46.3% 0.165 260.9);

Tailwind

colors: {
  custom: {
    50: '#7481ca',
    500: '#1b52b3',
    950: '#000000',
  },
}

SCSS

$custom: #1b52b3;
$custom-light: #7481ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1b52b3",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 179
  },
  "hsl": {
    "h": 218.289,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.46332,
    "c": 0.16484,
    "h": 260.9
  },
  "luminance": 0.09522
}

Semantic roles & 50–950 ramp

primary

#1B52B3

secondary

#CCA45E

accent

#AD37F0

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1B52B3

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

Preview Lab → · Contrast checker → · Palette generator →