#1B3486#1B3486

#1B3486 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.2% C 0.141 H 266.3°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B3486
RGB	rgb(27, 52, 134)
HSL	hsl(226, 66%, 32%)
HSV	hsv(226, 80%, 53%)
CMYK	cmyk(79.9%, 61.2%, 0%, 47.5%)
CIE-LAB	lab(24.98, 22.24, -48.60)
CIE-LCH	lch(24.98, 53.45, 294.59°)
OKLab	oklab(36.16% -0.0091 -0.1404)
OKLCH	oklch(36.16% 0.141 266.3)
XYZ	xyz(5.9816, 4.4095, 23.0855)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3486 #866D1B

analogous

#1B6A86 #1B3486 #371B86

triadic

#1B3486 #861B34 #34861B

tetradic

#1B3486 #861B6A #866D1B #1B8637

square

#1B3486 #861B6A #866D1B #1B8637

split-complementary

#1B3486 #86371B #6A861B

monochromatic

#060C20 #112053 #1B3486 #2548B9 #4266D9

Accessibility & contrast

On white

11.16

#1B3486 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1B3486 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3486

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3486	#FFFFFF	#000000	##FFFFFF
##1B3486	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004089

Deuteranopia (green-blind)

#003684

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b3486;
/* rgb */ color: rgb(27, 52, 134);
/* oklch */ color: oklch(36.2% 0.141 266.3);

Tailwind

colors: {
  custom: {
    50: '#6a6baa',
    500: '#1b3486',
    950: '#000000',
  },
}

SCSS

$custom: #1b3486;
$custom-light: #6a6baa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3486",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 134
  },
  "hsl": {
    "h": 225.981,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.36164,
    "c": 0.14073,
    "h": 266.3
  },
  "luminance": 0.0441
}

Semantic roles & 50–950 ramp

primary

#1B3486

secondary

#B99E44

accent

#C13EE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1B3486

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

Preview Lab → · Contrast checker → · Palette generator →