#1B3C8A#1B3C8A

#1B3C8A is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.136 H 263.8°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B3C8A
RGB	rgb(27, 60, 138)
HSL	hsl(222, 67%, 32%)
HSV	hsv(222, 80%, 54%)
CMYK	cmyk(80.4%, 56.5%, 0%, 45.9%)
CIE-LAB	lab(27.57, 18.27, -46.88)
CIE-LCH	lch(27.57, 50.31, 291.29°)
OKLab	oklab(38.21% -0.0147 -0.1352)
OKLCH	oklch(38.21% 0.136 263.8)
XYZ	xyz(6.6537, 5.2989, 24.7120)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3C8A #8A691B

analogous

#1B748A #1B3C8A #311B8A

triadic

#1B3C8A #8A1B3C #3C8A1B

tetradic

#1B3C8A #8A1B74 #8A691B #1B8A31

square

#1B3C8A #8A1B74 #8A691B #1B8A31

split-complementary

#1B3C8A #8A311B #748A1B

monochromatic

#070F24 #112657 #1B3C8A #2552BD #4571DB

Accessibility & contrast

On white

10.19

#1B3C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1B3C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3C8A

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3C8A	#FFFFFF	#000000	##FFFFFF
##1B3C8A	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468D

Deuteranopia (green-blind)

#003C88

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b3c8a;
/* rgb */ color: rgb(27, 60, 138);
/* oklch */ color: oklch(38.2% 0.136 263.8);

Tailwind

colors: {
  custom: {
    50: '#6a71ad',
    500: '#1b3c8a',
    950: '#000000',
  },
}

SCSS

$custom: #1b3c8a;
$custom-light: #6a71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3c8a",
  "rgb": {
    "r": 27,
    "g": 60,
    "b": 138
  },
  "hsl": {
    "h": 222.162,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38212,
    "c": 0.13601,
    "h": 263.8
  },
  "luminance": 0.053
}

Semantic roles & 50–950 ramp

primary

#1B3C8A

secondary

#BC9945

accent

#B73EEA

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1B3C8A

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

Preview Lab → · Contrast checker → · Palette generator →