#1B445B#1B445B

#1B445B is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 36.9% C 0.060 H 236.3°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX#1B445B
RGBrgb(27, 68, 91)
HSLhsl(202, 54%, 23%)
HSVhsv(202, 70%, 36%)
CMYKcmyk(70.3%, 25.3%, 0%, 64.3%)
CIE-LABlab(27.08, -6.07, -17.88)
CIE-LCHlch(27.08, 18.88, 251.26°)
OKLaboklab(36.87% -0.0335 -0.0502)
OKLCHoklch(36.87% 0.06 236.3)
XYZxyz(4.4067, 5.1221, 10.6519)
Luminance0.0512 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B445B #5B321B
analogous
#1B5B52 #1B445B #1B245B
triadic
#1B445B #5B1B44 #445B1B
tetradic
#1B445B #521B5B #5B321B #245B1B
square
#1B445B #521B5B #5B321B #245B1B
split-complementary
#1B445B #5B1B24 #5B521B
monochromatic
#071218 #0D212C #1B445B #29678A #378BB9

Accessibility & contrast

On white

10.37
#1B445B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.02
#1B445B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B445B
10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B445B#FFFFFF#000000##FFFFFF
##1B445B1.0010.372.0210.37
#FFFFFF10.371.0021.001.00
#0000002.0221.001.0021.00
##FFFFFF10.371.0021.001.00

Color blindness preview

Protanopia (red-blind)
#39445C
Deuteranopia (green-blind)
#303D5B
Tritanopia (blue-blind)
#004A4C
Achromatopsia (no color)
#404040

Design tokens & code

CSS
--color: #1b445b;
/* rgb */ color: rgb(27, 68, 91);
/* oklch */ color: oklch(36.9% 0.060 236.3);
Tailwind
colors: {
  custom: {
    50: '#5f7789',
    500: '#1b445b',
    950: '#000000',
  },
}
SCSS
$custom: #1b445b;
$custom-light: #5f7789;
$custom-dark: #000000;
JSON
{
  "hex": "#1b445b",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 91
  },
  "hsl": {
    "h": 201.563,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.36866,
    "c": 0.06035,
    "h": 236.3
  },
  "luminance": 0.05123
}

Semantic roles & 50–950 ramp

primary
#1B445B
secondary
#915E41
accent
#7F4ADE
background
#F5F7F8
surface
#EAEDF0
border
#C6C8CB
text
#05080B
muted
#797B7C

Preview Lab

Preview with #1B445B

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

Preview Lab → · Contrast checker → · Palette generator →

#1B445B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva