#1B3C5D#1B3C5D

#1B3C5D is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.070 H 250.5°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX#1B3C5D
RGBrgb(27, 60, 93)
HSLhsl(210, 55%, 24%)
HSVhsv(210, 71%, 36%)
CMYKcmyk(71%, 35.5%, 0%, 63.5%)
CIE-LABlab(24.50, -0.01, -23.22)
CIE-LCHlch(24.50, 23.22, 269.97°)
OKLaboklab(34.86% -0.0233 -0.0657)
OKLCHoklch(34.86% 0.07 250.5)
XYZxyz(4.0429, 4.2546, 10.9620)
Luminance0.0425 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B3C5D #5D3C1B
analogous
#1B5D5D #1B3C5D #1B1B5D
triadic
#1B3C5D #5D1B3C #3C5D1B
tetradic
#1B3C5D #5D1B5D #5D3C1B #1B5D1B
square
#1B3C5D #5D1B5D #5D3C1B #1B5D1B
split-complementary
#1B3C5D #5D1B1B #5D5D1B
monochromatic
#070F18 #0D1D2E #1B3C5D #295B8C #3779BC

Accessibility & contrast

On white

11.35
#1B3C5D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.85
#1B3C5D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3C5D
11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B3C5D#FFFFFF#000000##FFFFFF
##1B3C5D1.0011.351.8511.35
#FFFFFF11.351.0021.001.00
#0000001.8521.001.0021.00
##FFFFFF11.351.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2E3E5E
Deuteranopia (green-blind)
#24375C
Tritanopia (blue-blind)
#004448
Achromatopsia (no color)
#3A3A3A

Design tokens & code

CSS
--color: #1b3c5d;
/* rgb */ color: rgb(27, 60, 93);
/* oklch */ color: oklch(34.9% 0.070 250.5);
Tailwind
colors: {
  custom: {
    50: '#60718b',
    500: '#1b3c5d',
    950: '#000000',
  },
}
SCSS
$custom: #1b3c5d;
$custom-light: #60718b;
$custom-dark: #000000;
JSON
{
  "hex": "#1b3c5d",
  "rgb": {
    "r": 27,
    "g": 60,
    "b": 93
  },
  "hsl": {
    "h": 210,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.3486,
    "c": 0.06976,
    "h": 250.5
  },
  "luminance": 0.04255
}

Semantic roles & 50–950 ramp

primary
#1B3C5D
secondary
#936A41
accent
#9449DE
background
#F5F6F8
surface
#EAECF0
border
#C6C7CB
text
#05070C
muted
#797A7D

Preview Lab

Preview with #1B3C5D

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

Preview Lab → · Contrast checker → · Palette generator →

#1B3C5D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva