#1B52AA#1B52AA

#1B52AA is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.6% C 0.153 H 259.8°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#1B52AA
RGB	rgb(27, 82, 170)
HSL	hsl(217, 73%, 39%)
HSV	hsv(217, 84%, 67%)
CMYK	cmyk(84.1%, 51.8%, 0%, 33.3%)
CIE-LAB	lab(36.31, 16.13, -52.13)
CIE-LCH	lch(36.31, 54.57, 287.20°)
OKLab	oklab(45.62% -0.0271 -0.1502)
OKLCH	oklch(45.62% 0.153 259.8)
XYZ	xyz(10.7223, 9.1685, 39.2270)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B52AA #AA731B

analogous

#1B99AA #1B52AA #2B1BAA

triadic

#1B52AA #AA1B52 #52AA1B

tetradic

#1B52AA #AA1B99 #AA731B #1BAA2B

square

#1B52AA #AA1B99 #AA731B #1BAA2B

split-complementary

#1B52AA #AA2B1B #99AA1B

monochromatic

#0A1F40 #133975 #1B52AA #266CDC #5B90E5

Accessibility & contrast

On white

7.41

#1B52AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1B52AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B52AA

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B52AA	#FFFFFF	#000000	##FFFFFF
##1B52AA	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#165CAD

Deuteranopia (green-blind)

#004FA8

Tritanopia (blue-blind)

#006776

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b52aa;
/* rgb */ color: rgb(27, 82, 170);
/* oklch */ color: oklch(45.6% 0.153 259.8);

Tailwind

colors: {
  custom: {
    50: '#7181c4',
    500: '#1b52aa',
    950: '#000000',
  },
}

SCSS

$custom: #1b52aa;
$custom-light: #7181c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b52aa",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 170
  },
  "hsl": {
    "h": 216.923,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.45619,
    "c": 0.15266,
    "h": 259.8
  },
  "luminance": 0.0917
}

Semantic roles & 50–950 ramp

primary

#1B52AA

secondary

#C99D58

accent

#A939EF

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1B52AA

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

Preview Lab → · Contrast checker → · Palette generator →