#1B4D79#1B4D79

#1B4D79 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 41.0% C 0.091 H 248.7°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D79
RGB	rgb(27, 77, 121)
HSL	hsl(208, 64%, 29%)
HSV	hsv(208, 78%, 47%)
CMYK	cmyk(77.7%, 36.4%, 0%, 52.5%)
CIE-LAB	lab(31.63, -0.23, -29.80)
CIE-LCH	lch(31.63, 29.80, 269.56°)
OKLab	oklab(40.97% -0.0331 -0.0847)
OKLCH	oklch(40.97% 0.091 248.7)
XYZ	xyz(6.5558, 6.9205, 19.0757)
Luminance	0.0692 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D79 #79471B

analogous

#1B7976 #1B4D79 #1B1E79

triadic

#1B4D79 #791B4D #4D791B

tetradic

#1B4D79 #761B79 #79471B #1E791B

square

#1B4D79 #761B79 #79471B #1E791B

split-complementary

#1B4D79 #791B1E #79761B

monochromatic

#061019 #102D47 #1B4D79 #266DAB #3B8CD3

Accessibility & contrast

On white

8.81

#1B4D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1B4D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D79

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D79	#FFFFFF	#000000	##FFFFFF
##1B4D79	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)

#394F7B

Deuteranopia (green-blind)

#2B4678

Tritanopia (blue-blind)

#00575D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4d79;
/* rgb */ color: rgb(27, 77, 121);
/* oklch */ color: oklch(41.0% 0.091 248.7);

Tailwind

colors: {
  custom: {
    50: '#667ea0',
    500: '#1b4d79',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d79;
$custom-light: #667ea0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d79",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 121
  },
  "hsl": {
    "h": 208.085,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.40974,
    "c": 0.09095,
    "h": 248.7
  },
  "luminance": 0.06921
}

Semantic roles & 50–950 ramp

primary

#1B4D79

secondary

#AD7443

accent

#8F41E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4D79

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

Preview Lab → · Contrast checker → · Palette generator →