#1B4C83#1B4C83

#1B4C83 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.4% C 0.106 H 253.9°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX#1B4C83
RGBrgb(27, 76, 131)
HSLhsl(212, 66%, 31%)
HSVhsv(212, 79%, 51%)
CMYKcmyk(79.4%, 42%, 0%, 48.6%)
CIE-LABlab(31.90, 4.43, -35.57)
CIE-LCHlch(31.90, 35.85, 277.11°)
OKLaboklab(41.38% -0.0294 -0.1017)
OKLCHoklch(41.38% 0.106 253.9)
XYZxyz(7.1316, 7.0398, 22.4513)
Luminance0.0704 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B4C83 #83521B
analogous
#1B8083 #1B4C83 #1E1B83
triadic
#1B4C83 #831B4C #4C831B
tetradic
#1B4C83 #831B80 #83521B #1B831E
square
#1B4C83 #831B80 #83521B #1B831E
split-complementary
#1B4C83 #831E1B #80831B
monochromatic
#06111E #112F50 #1B4C83 #2569B6 #4188D8

Accessibility & contrast

On white

8.72
#1B4C83 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.41
#1B4C83 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4C83
8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B4C83#FFFFFF#000000##FFFFFF
##1B4C831.008.722.418.72
#FFFFFF8.721.0021.001.00
#0000002.4121.001.0021.00
##FFFFFF8.721.0021.001.00

Color blindness preview

Protanopia (red-blind)
#315085
Deuteranopia (green-blind)
#204782
Tritanopia (blue-blind)
#005961
Achromatopsia (no color)
#4B4B4B

Design tokens & code

CSS
--color: #1b4c83;
/* rgb */ color: rgb(27, 76, 131);
/* oklch */ color: oklch(41.4% 0.106 253.9);
Tailwind
colors: {
  custom: {
    50: '#687da7',
    500: '#1b4c83',
    950: '#000000',
  },
}
SCSS
$custom: #1b4c83;
$custom-light: #687da7;
$custom-dark: #000000;
JSON
{
  "hex": "#1b4c83",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 131
  },
  "hsl": {
    "h": 211.731,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.41379,
    "c": 0.10583,
    "h": 253.9
  },
  "luminance": 0.07041
}

Semantic roles & 50–950 ramp

primary
#1B4C83
secondary
#B68043
accent
#993FE9
background
#F6F7FA
surface
#EBEEF4
border
#C6C9CE
text
#07090F
muted
#7A7B7F

Preview Lab

Preview with #1B4C83

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

Preview Lab → · Contrast checker → · Palette generator →

#1B4C83 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva