#1B3256#1B3256

#1B3256 is a dark, moderate blue. Relative luminance 0.032; OKLCH L 31.8% C 0.071 H 259.0°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B3256
RGB	rgb(27, 50, 86)
HSL	hsl(217, 52%, 22%)
HSV	hsv(217, 69%, 34%)
CMYK	cmyk(68.6%, 41.9%, 0%, 66.3%)
CIE-LAB	lab(20.77, 4.14, -24.50)
CIE-LCH	lch(20.77, 24.85, 279.60°)
OKLab	oklab(31.82% -0.0135 -0.0696)
OKLCH	oklch(31.82% 0.071 259)
XYZ	xyz(3.2717, 3.1858, 9.2448)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3256 #563F1B

analogous

#1B5056 #1B3256 #221B56

triadic

#1B3256 #561B32 #32561B

tetradic

#1B3256 #561B50 #563F1B #1B5622

square

#1B3256 #561B50 #563F1B #1B5622

split-complementary

#1B3256 #56221B #50561B

monochromatic

#070E17 #0C1727 #1B3256 #2A4D85 #3868B3

Accessibility & contrast

On white

12.83

#1B3256 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1B3256 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3256

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3256	#FFFFFF	#000000	##FFFFFF
##1B3256	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#223557

Deuteranopia (green-blind)

#1A2F55

Tritanopia (blue-blind)

#003A3F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b3256;
/* rgb */ color: rgb(27, 50, 86);
/* oklch */ color: oklch(31.8% 0.071 259.0);

Tailwind

colors: {
  custom: {
    50: '#5e6986',
    500: '#1b3256',
    950: '#000000',
  },
}

SCSS

$custom: #1b3256;
$custom-light: #5e6986;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3256",
  "rgb": {
    "r": 27,
    "g": 50,
    "b": 86
  },
  "hsl": {
    "h": 216.61,
    "s": 52.212,
    "l": 22.157
  },
  "oklch": {
    "l": 0.31818,
    "c": 0.07092,
    "h": 259
  },
  "luminance": 0.03186
}

Semantic roles & 50–950 ramp

primary

#1B3256

secondary

#8C6F41

accent

#A44CDC

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #1B3256

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

Preview Lab → · Contrast checker → · Palette generator →