#1B3754#1B3754

#1B3754 is a dark, moderate cyan. Relative luminance 0.036; OKLCH L 33.0% C 0.062 H 251.0°. Best body text is #FFFFFF at 12.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B3754
RGB	rgb(27, 55, 84)
HSL	hsl(211, 51%, 22%)
HSV	hsv(211, 68%, 33%)
CMYK	cmyk(67.9%, 34.5%, 0%, 67.1%)
CIE-LAB	lab(22.32, -0.14, -20.73)
CIE-LCH	lch(22.32, 20.73, 269.61°)
OKLab	oklab(32.99% -0.0202 -0.0586)
OKLCH	oklch(32.99% 0.062 251)
XYZ	xyz(3.4178, 3.6052, 8.9015)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3754 #54381B

analogous

#1B5454 #1B3754 #1C1B54

triadic

#1B3754 #541B37 #37541B

tetradic

#1B3754 #541B54 #54381B #1B541C

square

#1B3754 #541B54 #54381B #1B541C

split-complementary

#1B3754 #541C1B #54541B

monochromatic

#070F17 #0C1926 #1B3754 #2A5582 #3974B1

Accessibility & contrast

On white

12.20

#1B3754 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1B3754 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3754

12.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3754	#FFFFFF	#000000	##FFFFFF
##1B3754	1.00	12.20	1.72	12.20
#FFFFFF	12.20	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3855

Deuteranopia (green-blind)

#233353

Tritanopia (blue-blind)

#003E41

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b3754;
/* rgb */ color: rgb(27, 55, 84);
/* oklch */ color: oklch(33.0% 0.062 251.0);

Tailwind

colors: {
  custom: {
    50: '#5e6d84',
    500: '#1b3754',
    950: '#000000',
  },
}

SCSS

$custom: #1b3754;
$custom-light: #5e6d84;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3754",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 84
  },
  "hsl": {
    "h": 210.526,
    "s": 51.351,
    "l": 21.765
  },
  "oklch": {
    "l": 0.32988,
    "c": 0.06196,
    "h": 251
  },
  "luminance": 0.03605
}

Semantic roles & 50–950 ramp

primary

#1B3754

secondary

#8A6641

accent

#954DDB

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #1B3754

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

Preview Lab → · Contrast checker → · Palette generator →