#1B4E73#1B4E73

#1B4E73 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 40.9% C 0.082 H 244.0°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E73
RGB	rgb(27, 78, 115)
HSL	hsl(205, 62%, 28%)
HSV	hsv(205, 77%, 45%)
CMYK	cmyk(76.5%, 32.2%, 0%, 54.9%)
CIE-LAB	lab(31.62, -3.24, -26.05)
CIE-LCH	lch(31.62, 26.25, 262.91°)
OKLab	oklab(40.86% -0.036 -0.0738)
OKLCH	oklch(40.86% 0.082 244)
XYZ	xyz(6.2697, 6.9189, 17.2214)
Luminance	0.0692 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E73 #73401B

analogous

#1B736C #1B4E73 #1B2273

triadic

#1B4E73 #731B4E #4E731B

tetradic

#1B4E73 #6C1B73 #73401B #22731B

square

#1B4E73 #6C1B73 #73401B #22731B

split-complementary

#1B4E73 #731B22 #736C1B

monochromatic

#061119 #0F2C41 #1B4E73 #2770A5 #3890D0

Accessibility & contrast

On white

8.81

#1B4E73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1B4E73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E73

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E73	#FFFFFF	#000000	##FFFFFF
##1B4E73	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4F75

Deuteranopia (green-blind)

#314772

Tritanopia (blue-blind)

#00575B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4e73;
/* rgb */ color: rgb(27, 78, 115);
/* oklch */ color: oklch(40.9% 0.082 244.0);

Tailwind

colors: {
  custom: {
    50: '#647f9b',
    500: '#1b4e73',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e73;
$custom-light: #647f9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e73",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 115
  },
  "hsl": {
    "h": 205.227,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.40864,
    "c": 0.0821,
    "h": 244
  },
  "luminance": 0.0692
}

Semantic roles & 50–950 ramp

primary

#1B4E73

secondary

#A86D42

accent

#8743E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4E73

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

Preview Lab → · Contrast checker → · Palette generator →