#1B3552#1B3552

#1B3552 is a dark, moderate cyan. Relative luminance 0.034; OKLCH L 32.3% C 0.061 H 252.5°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1B3552
RGB	rgb(27, 53, 82)
HSL	hsl(212, 50%, 21%)
HSV	hsv(212, 67%, 32%)
CMYK	cmyk(67.1%, 35.4%, 0%, 67.8%)
CIE-LAB	lab(21.54, 0.45, -20.64)
CIE-LCH	lch(21.54, 20.64, 271.26°)
OKLab	oklab(32.34% -0.0184 -0.0583)
OKLCH	oklch(32.34% 0.061 252.5)
XYZ	xyz(3.2475, 3.3881, 8.4638)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3552 #52381B

analogous

#1B5152 #1B3552 #1D1B52

triadic

#1B3552 #521B35 #35521B

tetradic

#1B3552 #521B51 #52381B #1B521D

square

#1B3552 #521B51 #52381B #1B521D

split-complementary

#1B3552 #521D1B #51521B

monochromatic

#080F17 #0C1724 #1B3552 #2A5380 #3971AE

Accessibility & contrast

On white

12.52

#1B3552 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B3552 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3552

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3552	#FFFFFF	#000000	##FFFFFF
##1B3552	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293753

Deuteranopia (green-blind)

#213151

Tritanopia (blue-blind)

#003C3F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b3552;
/* rgb */ color: rgb(27, 53, 82);
/* oklch */ color: oklch(32.3% 0.061 252.5);

Tailwind

colors: {
  custom: {
    50: '#5d6c82',
    500: '#1b3552',
    950: '#000000',
  },
}

SCSS

$custom: #1b3552;
$custom-light: #5d6c82;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3552",
  "rgb": {
    "r": 27,
    "g": 53,
    "b": 82
  },
  "hsl": {
    "h": 211.636,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.32336,
    "c": 0.06115,
    "h": 252.5
  },
  "luminance": 0.03388
}

Semantic roles & 50–950 ramp

primary

#1B3552

secondary

#886641

accent

#984EDA

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060A

muted

#797A7C

Preview Lab

Preview with #1B3552

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

Preview Lab → · Contrast checker → · Palette generator →