#1B52A7#1B52A7

#1B52A7 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.4% C 0.149 H 259.3°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B52A7
RGB	rgb(27, 82, 167)
HSL	hsl(216, 72%, 38%)
HSV	hsv(216, 84%, 65%)
CMYK	cmyk(83.8%, 50.9%, 0%, 34.5%)
CIE-LAB	lab(36.09, 14.93, -50.69)
CIE-LCH	lch(36.09, 52.84, 286.42°)
OKLab	oklab(45.39% -0.0275 -0.146)
OKLCH	oklch(45.39% 0.149 259.3)
XYZ	xyz(10.4418, 9.0563, 37.7494)
Luminance	0.0906 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B52A7 #A7701B

analogous

#1B98A7 #1B52A7 #2A1BA7

triadic

#1B52A7 #A71B52 #52A71B

tetradic

#1B52A7 #A71B98 #A7701B #1BA72A

square

#1B52A7 #A71B98 #A7701B #1BA72A

split-complementary

#1B52A7 #A72A1B #98A71B

monochromatic

#0A1E3E #123872 #1B52A7 #246CDC #588FE4

Accessibility & contrast

On white

7.47

#1B52A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#1B52A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B52A7

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B52A7	#FFFFFF	#000000	##FFFFFF
##1B52A7	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C5CAA

Deuteranopia (green-blind)

#004FA5

Tritanopia (blue-blind)

#006774

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b52a7;
/* rgb */ color: rgb(27, 82, 167);
/* oklch */ color: oklch(45.4% 0.149 259.3);

Tailwind

colors: {
  custom: {
    50: '#7181c2',
    500: '#1b52a7',
    950: '#000000',
  },
}

SCSS

$custom: #1b52a7;
$custom-light: #7181c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b52a7",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 167
  },
  "hsl": {
    "h": 216.429,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.45387,
    "c": 0.14857,
    "h": 259.3
  },
  "luminance": 0.09058
}

Semantic roles & 50–950 ramp

primary

#1B52A7

secondary

#C89B56

accent

#A739EF

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1B52A7

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

Preview Lab → · Contrast checker → · Palette generator →