#1B3796#1B3796

#1B3796 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.3% C 0.159 H 266.1°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B3796
RGB	rgb(27, 55, 150)
HSL	hsl(226, 69%, 35%)
HSV	hsv(226, 82%, 59%)
CMYK	cmyk(82%, 63.3%, 0%, 41.2%)
CIE-LAB	lab(27.20, 26.52, -54.87)
CIE-LCH	lch(27.20, 60.94, 295.80°)
OKLab	oklab(38.25% -0.0109 -0.1588)
OKLCH	oklch(38.25% 0.159 266.1)
XYZ	xyz(7.3213, 5.1665, 29.4596)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3796 #967A1B

analogous

#1B7596 #1B3796 #3C1B96

triadic

#1B3796 #961B37 #37961B

tetradic

#1B3796 #961B75 #967A1B #1B963C

square

#1B3796 #961B75 #967A1B #1B963C

split-complementary

#1B3796 #963C1B #75961B

monochromatic

#08112E #122462 #1B3796 #244ACA #4D6EDF

Accessibility & contrast

On white

10.33

#1B3796 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1B3796 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3796

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3796	#FFFFFF	#000000	##FFFFFF
##1B3796	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004699

Deuteranopia (green-blind)

#003B94

Tritanopia (blue-blind)

#005061

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b3796;
/* rgb */ color: rgb(27, 55, 150);
/* oklch */ color: oklch(38.3% 0.159 266.1);

Tailwind

colors: {
  custom: {
    50: '#6e6db6',
    500: '#1b3796',
    950: '#000000',
  },
}

SCSS

$custom: #1b3796;
$custom-light: #6e6db6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3796",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 150
  },
  "hsl": {
    "h": 226.341,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38254,
    "c": 0.15913,
    "h": 266.1
  },
  "luminance": 0.05167
}

Semantic roles & 50–950 ramp

primary

#1B3796

secondary

#C1A64C

accent

#C43BEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3796

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

Preview Lab → · Contrast checker → · Palette generator →