#1B4E79#1B4E79

#1B4E79 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.2% C 0.090 H 247.7°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX#1B4E79
RGBrgb(27, 78, 121)
HSLhsl(207, 64%, 29%)
HSVhsv(207, 78%, 47%)
CMYKcmyk(77.7%, 35.5%, 0%, 52.5%)
CIE-LABlab(31.95, -0.88, -29.29)
CIE-LCHlch(31.95, 29.30, 268.28°)
OKLaboklab(41.23% -0.0341 -0.0832)
OKLCHoklch(41.23% 0.09 247.7)
XYZxyz(6.6263, 7.0615, 19.0992)
Luminance0.0706 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B4E79 #79461B
analogous
#1B7975 #1B4E79 #1B1F79
triadic
#1B4E79 #791B4E #4E791B
tetradic
#1B4E79 #751B79 #79461B #1F791B
square
#1B4E79 #751B79 #79461B #1F791B
split-complementary
#1B4E79 #791B1F #79751B
monochromatic
#061019 #102E47 #1B4E79 #266EAB #3B8ED3

Accessibility & contrast

On white

8.71
#1B4E79 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.41
#1B4E79 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E79
8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B4E79#FFFFFF#000000##FFFFFF
##1B4E791.008.712.418.71
#FFFFFF8.711.0021.001.00
#0000002.4121.001.0021.00
##FFFFFF8.711.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3A507B
Deuteranopia (green-blind)
#2D4778
Tritanopia (blue-blind)
#00585E
Achromatopsia (no color)
#4B4B4B

Design tokens & code

CSS
--color: #1b4e79;
/* rgb */ color: rgb(27, 78, 121);
/* oklch */ color: oklch(41.2% 0.090 247.7);
Tailwind
colors: {
  custom: {
    50: '#667fa0',
    500: '#1b4e79',
    950: '#000000',
  },
}
SCSS
$custom: #1b4e79;
$custom-light: #667fa0;
$custom-dark: #000000;
JSON
{
  "hex": "#1b4e79",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 121
  },
  "hsl": {
    "h": 207.447,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.41227,
    "c": 0.08993,
    "h": 247.7
  },
  "luminance": 0.07062
}

Semantic roles & 50–950 ramp

primary
#1B4E79
secondary
#AD7343
accent
#8D41E7
background
#F6F7F9
surface
#EBEEF2
border
#C6C9CC
text
#060A0E
muted
#7A7C7E

Preview Lab

Preview with #1B4E79

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

Preview Lab → · Contrast checker → · Palette generator →

#1B4E79 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva