#1B4A79#1B4A79

#1B4A79 is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 40.2% C 0.094 H 251.4°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A79
RGB	rgb(27, 74, 121)
HSL	hsl(210, 64%, 29%)
HSV	hsv(210, 78%, 47%)
CMYK	cmyk(77.7%, 38.8%, 0%, 52.5%)
CIE-LAB	lab(30.66, 1.75, -31.32)
CIE-LCH	lch(30.66, 31.37, 273.20°)
OKLab	oklab(40.22% -0.0301 -0.0892)
OKLCH	oklch(40.22% 0.094 251.4)
XYZ	xyz(6.3507, 6.5103, 19.0074)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A79 #794A1B

analogous

#1B7979 #1B4A79 #1B1B79

triadic

#1B4A79 #791B4A #4A791B

tetradic

#1B4A79 #791B79 #794A1B #1B791B

square

#1B4A79 #791B79 #794A1B #1B791B

split-complementary

#1B4A79 #791B1B #79791B

monochromatic

#060F19 #102B47 #1B4A79 #2669AB #3B87D3

Accessibility & contrast

On white

9.12

#1B4A79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B4A79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A79

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A79	#FFFFFF	#000000	##FFFFFF
##1B4A79	1.00	9.12	2.30	9.12
#FFFFFF	9.12	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344D7B

Deuteranopia (green-blind)

#264478

Tritanopia (blue-blind)

#00555B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4a79;
/* rgb */ color: rgb(27, 74, 121);
/* oklch */ color: oklch(40.2% 0.094 251.4);

Tailwind

colors: {
  custom: {
    50: '#667ca0',
    500: '#1b4a79',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a79;
$custom-light: #667ca0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a79",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 121
  },
  "hsl": {
    "h": 210,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.40221,
    "c": 0.09415,
    "h": 251.4
  },
  "luminance": 0.06511
}

Semantic roles & 50–950 ramp

primary

#1B4A79

secondary

#AD7843

accent

#9441E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4A79

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

Preview Lab → · Contrast checker → · Palette generator →