#1B2B87#1B2B87

#1B2B87 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.5% C 0.153 H 268.7°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B87
RGB	rgb(27, 43, 135)
HSL	hsl(231, 67%, 32%)
HSV	hsv(231, 80%, 53%)
CMYK	cmyk(80%, 68.1%, 0%, 47.1%)
CIE-LAB	lab(22.69, 28.82, -52.98)
CIE-LCH	lch(22.69, 60.31, 298.54°)
OKLab	oklab(34.5% -0.0034 -0.1534)
OKLCH	oklch(34.5% 0.153 268.7)
XYZ	xyz(5.6875, 3.7094, 23.3332)
Luminance	0.0371 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B87 #87771B

analogous

#1B6187 #1B2B87 #411B87

triadic

#1B2B87 #871B2B #2B871B

tetradic

#1B2B87 #871B61 #87771B #1B8741

square

#1B2B87 #871B61 #87771B #1B8741

split-complementary

#1B2B87 #87411B #61871B

monochromatic

#070B21 #111B54 #1B2B87 #253BBA #4359D9

Accessibility & contrast

On white

12.06

#1B2B87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1B2B87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B87

12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B87	#FFFFFF	#000000	##FFFFFF
##1B2B87	1.00	12.06	1.74	12.06
#FFFFFF	12.06	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8A

Deuteranopia (green-blind)

#003185

Tritanopia (blue-blind)

#004455

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2b87;
/* rgb */ color: rgb(27, 43, 135);
/* oklch */ color: oklch(34.5% 0.153 268.7);

Tailwind

colors: {
  custom: {
    50: '#6b64ab',
    500: '#1b2b87',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b87;
$custom-light: #6b64ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b87",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 135
  },
  "hsl": {
    "h": 231.111,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.34497,
    "c": 0.1534,
    "h": 268.7
  },
  "luminance": 0.0371
}

Semantic roles & 50–950 ramp

primary

#1B2B87

secondary

#BAA944

accent

#D03EEA

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080510

muted

#7A7A7F

Preview Lab

Preview with #1B2B87

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

Preview Lab → · Contrast checker → · Palette generator →