#1B384A#1B384A

#1B384A is a dark, muted cyan. Relative luminance 0.036; OKLCH L 32.7% C 0.047 H 237.8°. Best body text is #FFFFFF at 12.27:1 contrast (WCAG AA passes).

Color values

HEX	#1B384A
RGB	rgb(27, 56, 74)
HSL	hsl(203, 47%, 20%)
HSV	hsv(203, 64%, 29%)
CMYK	cmyk(63.5%, 24.3%, 0%, 71%)
CIE-LAB	lab(22.14, -4.63, -14.36)
CIE-LCH	lch(22.14, 15.08, 252.11°)
OKLab	oklab(32.68% -0.0252 -0.0401)
OKLCH	oklch(32.68% 0.047 237.8)
XYZ	xyz(3.1017, 3.5555, 7.0001)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B384A #4A2D1B

analogous

#1B4A45 #1B384A #1B204A

triadic

#1B384A #4A1B38 #384A1B

tetradic

#1B384A #451B4A #4A2D1B #204A1B

square

#1B384A #451B4A #4A2D1B #204A1B

split-complementary

#1B384A #4A1B20 #4A451B

monochromatic

#081116 #0B161D #1B384A #2B5A77 #3C7CA4

Accessibility & contrast

On white

12.27

#1B384A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B384A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B384A

12.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B384A	#FFFFFF	#000000	##FFFFFF
##1B384A	1.00	12.27	1.71	12.27
#FFFFFF	12.27	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30384B

Deuteranopia (green-blind)

#29334A

Tritanopia (blue-blind)

#003D3E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b384a;
/* rgb */ color: rgb(27, 56, 74);
/* oklch */ color: oklch(32.7% 0.047 237.8);

Tailwind

colors: {
  custom: {
    50: '#5c6e7c',
    500: '#1b384a',
    950: '#000000',
  },
}

SCSS

$custom: #1b384a;
$custom-light: #5c6e7c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b384a",
  "rgb": {
    "r": 27,
    "g": 56,
    "b": 74
  },
  "hsl": {
    "h": 202.979,
    "s": 46.535,
    "l": 19.804
  },
  "oklch": {
    "l": 0.32678,
    "c": 0.04741,
    "h": 237.8
  },
  "luminance": 0.03556
}

Semantic roles & 50–950 ramp

primary

#1B384A

secondary

#805941

accent

#8452D6

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #1B384A

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

Preview Lab → · Contrast checker → · Palette generator →