#1B548B#1B548B

#1B548B is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.9% C 0.108 H 251.1°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX#1B548B
RGBrgb(27, 84, 139)
HSLhsl(209, 67%, 33%)
HSVhsv(209, 81%, 55%)
CMYKcmyk(80.6%, 39.6%, 0%, 45.5%)
CIE-LABlab(34.88, 2.36, -35.74)
CIE-LCHlch(34.88, 35.82, 273.78°)
OKLaboklab(43.86% -0.0348 -0.102)
OKLCHoklch(43.86% 0.108 251.1)
XYZxyz(8.2808, 8.4367, 25.6131)
Luminance0.0844 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B548B #8B521B
analogous
#1B8B8A #1B548B #1B1C8B
triadic
#1B548B #8B1B54 #548B1B
tetradic
#1B548B #8A1B8B #8B521B #1C8B1B
square
#1B548B #8A1B8B #8B521B #1C8B1B
split-complementary
#1B548B #8B1B1C #8B8A1B
monochromatic
#071625 #113558 #1B548B #2573BE #4592DB

Accessibility & contrast

On white

7.81
#1B548B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.69
#1B548B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B548B
7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B548B#FFFFFF#000000##FFFFFF
##1B548B1.007.812.697.81
#FFFFFF7.811.0021.001.00
#0000002.6921.001.0021.00
##FFFFFF7.811.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3A588D
Deuteranopia (green-blind)
#284D8A
Tritanopia (blue-blind)
#006168
Achromatopsia (no color)
#525252

Design tokens & code

CSS
--color: #1b548b;
/* rgb */ color: rgb(27, 84, 139);
/* oklch */ color: oklch(43.9% 0.108 251.1);
Tailwind
colors: {
  custom: {
    50: '#6a83ad',
    500: '#1b548b',
    950: '#000000',
  },
}
SCSS
$custom: #1b548b;
$custom-light: #6a83ad;
$custom-dark: #000000;
JSON
{
  "hex": "#1b548b",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 139
  },
  "hsl": {
    "h": 209.464,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.43861,
    "c": 0.10779,
    "h": 251.1
  },
  "luminance": 0.08438
}

Semantic roles & 50–950 ramp

primary
#1B548B
secondary
#BC8045
accent
#923DEA
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070A10
muted
#7A7C7F

Preview Lab

Preview with #1B548B

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

Preview Lab → · Contrast checker → · Palette generator →

#1B548B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva