#1B2877#1B2877

#1B2877 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.3% C 0.135 H 269.7°. Best body text is #FFFFFF at 12.99:1 contrast (WCAG AA passes).

Color values

HEX	#1B2877
RGB	rgb(27, 40, 119)
HSL	hsl(232, 63%, 29%)
HSV	hsv(232, 77%, 47%)
CMYK	cmyk(77.3%, 66.4%, 0%, 53.3%)
CIE-LAB	lab(20.37, 24.64, -46.66)
CIE-LCH	lch(20.37, 52.77, 297.84°)
OKLab	oklab(32.33% -0.0006 -0.1349)
OKLCH	oklch(32.33% 0.135 269.7)
XYZ	xyz(4.5394, 3.0820, 17.8048)
Luminance	0.0308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2877 #776A1B

analogous

#1B5677 #1B2877 #3C1B77

triadic

#1B2877 #771B28 #28771B

tetradic

#1B2877 #771B56 #776A1B #1B773C

square

#1B2877 #771B56 #776A1B #1B773C

split-complementary

#1B2877 #773C1B #56771B

monochromatic

#060819 #101745 #1B2877 #2639A9 #3A50D2

Accessibility & contrast

On white

12.99

#1B2877 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1B2877 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2877

12.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2877	#FFFFFF	#000000	##FFFFFF
##1B2877	1.00	12.99	1.62	12.99
#FFFFFF	12.99	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00357A

Deuteranopia (green-blind)

#002D75

Tritanopia (blue-blind)

#003D4B

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2877;
/* rgb */ color: rgb(27, 40, 119);
/* oklch */ color: oklch(32.3% 0.135 269.7);

Tailwind

colors: {
  custom: {
    50: '#67619f',
    500: '#1b2877',
    950: '#000000',
  },
}

SCSS

$custom: #1b2877;
$custom-light: #67619f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2877",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 119
  },
  "hsl": {
    "h": 231.522,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.32327,
    "c": 0.13489,
    "h": 269.7
  },
  "luminance": 0.03083
}

Semantic roles & 50–950 ramp

primary

#1B2877

secondary

#AB9D42

accent

#CF42E6

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #1B2877

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

Preview Lab → · Contrast checker → · Palette generator →