#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
RGBrgb(27, 74, 121)
HSLhsl(210, 64%, 29%)
HSVhsv(210, 78%, 47%)
CMYKcmyk(77.7%, 38.8%, 0%, 52.5%)
CIE-LABlab(30.66, 1.75, -31.32)
CIE-LCHlch(30.66, 31.37, 273.20°)
OKLaboklab(40.22% -0.0301 -0.0892)
OKLCHoklch(40.22% 0.094 251.4)
XYZxyz(6.3507, 6.5103, 19.0074)
Luminance0.0651 (WCAG relative)
Temperaturecool
Familycyan

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
##1B4A791.009.122.309.12
#FFFFFF9.121.0021.001.00
#0000002.3021.001.0021.00
##FFFFFF9.121.0021.001.00

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 →

#1B4A79 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva