#1B2787#1B2787

#1B2787 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.8% C 0.158 H 269.5°. Best body text is #FFFFFF at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B2787
RGB	rgb(27, 39, 135)
HSL	hsl(233, 67%, 32%)
HSV	hsv(233, 80%, 53%)
CMYK	cmyk(80%, 71.1%, 0%, 47.1%)
CIE-LAB	lab(21.70, 31.47, -54.61)
CIE-LCH	lch(21.70, 63.03, 299.96°)
OKLab	oklab(33.78% -0.0013 -0.1581)
OKLCH	oklch(33.78% 0.158 269.5)
XYZ	xyz(5.5492, 3.4327, 23.2871)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2787 #877B1B

analogous

#1B5D87 #1B2787 #451B87

triadic

#1B2787 #871B27 #27871B

tetradic

#1B2787 #871B5D #877B1B #1B8745

square

#1B2787 #871B5D #877B1B #1B8745

split-complementary

#1B2787 #87451B #5D871B

monochromatic

#070A21 #111854 #1B2787 #2536BA #4354D9

Accessibility & contrast

On white

12.45

#1B2787 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1B2787 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2787

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2787	#FFFFFF	#000000	##FFFFFF
##1B2787	1.00	12.45	1.69	12.45
#FFFFFF	12.45	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398A

Deuteranopia (green-blind)

#002F85

Tritanopia (blue-blind)

#004254

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2787;
/* rgb */ color: rgb(27, 39, 135);
/* oklch */ color: oklch(33.8% 0.158 269.5);

Tailwind

colors: {
  custom: {
    50: '#6b61ab',
    500: '#1b2787',
    950: '#000000',
  },
}

SCSS

$custom: #1b2787;
$custom-light: #6b61ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2787",
  "rgb": {
    "r": 27,
    "g": 39,
    "b": 135
  },
  "hsl": {
    "h": 233.333,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.33779,
    "c": 0.15812,
    "h": 269.5
  },
  "luminance": 0.03433
}

Semantic roles & 50–950 ramp

primary

#1B2787

secondary

#BAAD44

accent

#D73EEA

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1B2787

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

Preview Lab → · Contrast checker → · Palette generator →