#1B4D73#1B4D73

#1B4D73 is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 40.6% C 0.083 H 245.1°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D73
RGB	rgb(27, 77, 115)
HSL	hsl(206, 62%, 28%)
HSV	hsv(206, 77%, 45%)
CMYK	cmyk(76.5%, 33%, 0%, 54.9%)
CIE-LAB	lab(31.30, -2.60, -26.57)
CIE-LCH	lch(31.30, 26.69, 264.42°)
OKLab	oklab(40.61% -0.035 -0.0753)
OKLCH	oklch(40.61% 0.083 245.1)
XYZ	xyz(6.1992, 6.7779, 17.1979)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D73 #73411B

analogous

#1B736D #1B4D73 #1B2173

triadic

#1B4D73 #731B4D #4D731B

tetradic

#1B4D73 #6D1B73 #73411B #21731B

square

#1B4D73 #6D1B73 #73411B #21731B

split-complementary

#1B4D73 #731B21 #736D1B

monochromatic

#061119 #0F2C41 #1B4D73 #276EA5 #388FD0

Accessibility & contrast

On white

8.91

#1B4D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1B4D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D73

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D73	#FFFFFF	#000000	##FFFFFF
##1B4D73	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C4E75

Deuteranopia (green-blind)

#2F4672

Tritanopia (blue-blind)

#00565B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4d73;
/* rgb */ color: rgb(27, 77, 115);
/* oklch */ color: oklch(40.6% 0.083 245.1);

Tailwind

colors: {
  custom: {
    50: '#647e9b',
    500: '#1b4d73',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d73;
$custom-light: #647e9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d73",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 115
  },
  "hsl": {
    "h": 205.909,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.40607,
    "c": 0.08301,
    "h": 245.1
  },
  "luminance": 0.06779
}

Semantic roles & 50–950 ramp

primary

#1B4D73

secondary

#A86E42

accent

#8943E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4D73

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

Preview Lab → · Contrast checker → · Palette generator →