#1B3752#1B3752

#1B3752 is a dark, muted cyan. Relative luminance 0.036; OKLCH L 32.9% C 0.059 H 249.3°. Best body text is #FFFFFF at 12.24:1 contrast (WCAG AA passes).

Color values

HEX	#1B3752
RGB	rgb(27, 55, 82)
HSL	hsl(209, 50%, 21%)
HSV	hsv(209, 67%, 32%)
CMYK	cmyk(67.1%, 32.9%, 0%, 67.8%)
CIE-LAB	lab(22.21, -0.92, -19.58)
CIE-LCH	lch(22.21, 19.60, 267.31°)
OKLab	oklab(32.87% -0.0209 -0.0552)
OKLCH	oklch(32.87% 0.059 249.3)
XYZ	xyz(3.3406, 3.5743, 8.4949)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3752 #52361B

analogous

#1B5252 #1B3752 #1B1C52

triadic

#1B3752 #521B37 #37521B

tetradic

#1B3752 #521B52 #52361B #1C521B

square

#1B3752 #521B52 #52361B #1C521B

split-complementary

#1B3752 #521B1C #52521B

monochromatic

#080F17 #0C1824 #1B3752 #2A5680 #3975AE

Accessibility & contrast

On white

12.24

#1B3752 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1B3752 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3752

12.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3752	#FFFFFF	#000000	##FFFFFF
##1B3752	1.00	12.24	1.72	12.24
#FFFFFF	12.24	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3853

Deuteranopia (green-blind)

#243351

Tritanopia (blue-blind)

#003D41

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b3752;
/* rgb */ color: rgb(27, 55, 82);
/* oklch */ color: oklch(32.9% 0.059 249.3);

Tailwind

colors: {
  custom: {
    50: '#5d6d82',
    500: '#1b3752',
    950: '#000000',
  },
}

SCSS

$custom: #1b3752;
$custom-light: #5d6d82;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3752",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 82
  },
  "hsl": {
    "h": 209.455,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.32866,
    "c": 0.05904,
    "h": 249.3
  },
  "luminance": 0.03575
}

Semantic roles & 50–950 ramp

primary

#1B3752

secondary

#886441

accent

#934EDA

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070A

muted

#797A7C

Preview Lab

Preview with #1B3752

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

Preview Lab → · Contrast checker → · Palette generator →