#1B3A52#1B3A52

#1B3A52 is a dark, muted cyan. Relative luminance 0.039; OKLCH L 33.7% C 0.056 H 244.0°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX#1B3A52
RGBrgb(27, 58, 82)
HSLhsl(206, 50%, 21%)
HSVhsv(206, 67%, 32%)
CMYKcmyk(67.1%, 29.3%, 0%, 67.8%)
CIE-LABlab(23.23, -2.95, -17.99)
CIE-LCHlch(23.23, 18.23, 260.69°)
OKLaboklab(33.67% -0.0247 -0.0506)
OKLCHoklch(33.67% 0.056 244)
XYZxyz(3.4875, 3.8680, 8.5438)
Luminance0.0387 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B3A52 #52331B
analogous
#1B524F #1B3A52 #1B1F52
triadic
#1B3A52 #521B3A #3A521B
tetradic
#1B3A52 #4F1B52 #52331B #1F521B
square
#1B3A52 #4F1B52 #52331B #1F521B
split-complementary
#1B3A52 #521B1F #524F1B
monochromatic
#081017 #0C1924 #1B3A52 #2A5B80 #397BAE

Accessibility & contrast

On white

11.84
#1B3A52 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.77
#1B3A52 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3A52
11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B3A52#FFFFFF#000000##FFFFFF
##1B3A521.0011.841.7711.84
#FFFFFF11.841.0021.001.00
#0000001.7721.001.0021.00
##FFFFFF11.841.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2F3A53
Deuteranopia (green-blind)
#283552
Tritanopia (blue-blind)
#004042
Achromatopsia (no color)
#373737

Design tokens & code

CSS
--color: #1b3a52;
/* rgb */ color: rgb(27, 58, 82);
/* oklch */ color: oklch(33.7% 0.056 244.0);
Tailwind
colors: {
  custom: {
    50: '#5d7082',
    500: '#1b3a52',
    950: '#000000',
  },
}
SCSS
$custom: #1b3a52;
$custom-light: #5d7082;
$custom-dark: #000000;
JSON
{
  "hex": "#1b3a52",
  "rgb": {
    "r": 27,
    "g": 58,
    "b": 82
  },
  "hsl": {
    "h": 206.182,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.33669,
    "c": 0.05627,
    "h": 244
  },
  "luminance": 0.03868
}

Semantic roles & 50–950 ramp

primary
#1B3A52
secondary
#886041
accent
#8B4EDA
background
#F5F6F8
surface
#E9ECEF
border
#C5C7CA
text
#05070A
muted
#797A7C

Preview Lab

Preview with #1B3A52

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

Preview Lab → · Contrast checker → · Palette generator →

#1B3A52 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva