#1B4B77#1B4B77

#1B4B77 is a dark, moderate cyan. Relative luminance 0.066; OKLCH L 40.3% C 0.090 H 249.5°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B77
RGB	rgb(27, 75, 119)
HSL	hsl(209, 63%, 29%)
HSV	hsv(209, 77%, 47%)
CMYK	cmyk(77.3%, 37%, 0%, 53.3%)
CIE-LAB	lab(30.87, 0.29, -29.74)
CIE-LCH	lch(30.87, 29.75, 270.56°)
OKLab	oklab(40.34% -0.0317 -0.0846)
OKLCH	oklch(40.34% 0.09 249.5)
XYZ	xyz(6.2966, 6.5964, 18.3906)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B77 #77471B

analogous

#1B7775 #1B4B77 #1B1D77

triadic

#1B4B77 #771B4B #4B771B

tetradic

#1B4B77 #751B77 #77471B #1D771B

square

#1B4B77 #751B77 #77471B #1D771B

split-complementary

#1B4B77 #771B1D #77751B

monochromatic

#061019 #102C45 #1B4B77 #266AA9 #3A8AD2

Accessibility & contrast

On white

9.05

#1B4B77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1B4B77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B77

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B77	#FFFFFF	#000000	##FFFFFF
##1B4B77	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#374D79

Deuteranopia (green-blind)

#294576

Tritanopia (blue-blind)

#00555B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4b77;
/* rgb */ color: rgb(27, 75, 119);
/* oklch */ color: oklch(40.3% 0.090 249.5);

Tailwind

colors: {
  custom: {
    50: '#657d9e',
    500: '#1b4b77',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b77;
$custom-light: #657d9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b77",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 119
  },
  "hsl": {
    "h": 208.696,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.40344,
    "c": 0.09032,
    "h": 249.5
  },
  "luminance": 0.06597
}

Semantic roles & 50–950 ramp

primary

#1B4B77

secondary

#AB7542

accent

#9042E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4B77

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

Preview Lab → · Contrast checker → · Palette generator →