#1B334D#1B334D

#1B334D is a dark, muted cyan. Relative luminance 0.031; OKLCH L 31.5% C 0.056 H 251.7°. Best body text is #FFFFFF at 12.91:1 contrast (WCAG AA passes).

Color values

HEX	#1B334D
RGB	rgb(27, 51, 77)
HSL	hsl(211, 48%, 20%)
HSV	hsv(211, 65%, 30%)
CMYK	cmyk(64.9%, 33.8%, 0%, 69.8%)
CIE-LAB	lab(20.58, -0.11, -18.80)
CIE-LCH	lch(20.58, 18.80, 269.68°)
OKLab	oklab(31.5% -0.0175 -0.053)
OKLCH	oklch(31.5% 0.056 251.7)
XYZ	xyz(2.9749, 3.1362, 7.4683)
Luminance	0.0314 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B334D #4D351B

analogous

#1B4C4D #1B334D #1C1B4D

triadic

#1B334D #4D1B33 #334D1B

tetradic

#1B334D #4D1B4C #4D351B #1B4D1C

square

#1B334D #4D1B4C #4D351B #1B4D1C

split-complementary

#1B334D #4D1C1B #4C4D1B

monochromatic

#080F17 #0B1520 #1B334D #2B517A #3B6FA8

Accessibility & contrast

On white

12.91

#1B334D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1B334D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B334D

12.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B334D	#FFFFFF	#000000	##FFFFFF
##1B334D	1.00	12.91	1.63	12.91
#FFFFFF	12.91	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28344E

Deuteranopia (green-blind)

#212F4C

Tritanopia (blue-blind)

#00393C

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b334d;
/* rgb */ color: rgb(27, 51, 77);
/* oklch */ color: oklch(31.5% 0.056 251.7);

Tailwind

colors: {
  custom: {
    50: '#5c6a7f',
    500: '#1b334d',
    950: '#000000',
  },
}

SCSS

$custom: #1b334d;
$custom-light: #5c6a7f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b334d",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 77
  },
  "hsl": {
    "h": 211.2,
    "s": 48.077,
    "l": 20.392
  },
  "oklch": {
    "l": 0.31496,
    "c": 0.05579,
    "h": 251.7
  },
  "luminance": 0.03136
}

Semantic roles & 50–950 ramp

primary

#1B334D

secondary

#836341

accent

#9750D8

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04060A

muted

#797A7C

Preview Lab

Preview with #1B334D

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

Preview Lab → · Contrast checker → · Palette generator →