#1B2C8B#1B2C8B

#1B2C8B is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.1% C 0.158 H 268.5°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX#1B2C8B
RGBrgb(27, 44, 139)
HSLhsl(231, 67%, 33%)
HSVhsv(231, 81%, 55%)
CMYKcmyk(80.6%, 68.3%, 0%, 45.5%)
CIE-LABlab(23.33, 29.68, -54.42)
CIE-LCHlch(23.33, 61.99, 298.61°)
OKLaboklab(35.09% -0.0043 -0.1576)
OKLCHoklch(35.09% 0.158 268.5)
XYZxyz(6.0113, 3.8978, 24.8566)
Luminance0.0390 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B2C8B #8B7A1B
analogous
#1B648B #1B2C8B #421B8B
triadic
#1B2C8B #8B1B2C #2C8B1B
tetradic
#1B2C8B #8B1B64 #8B7A1B #1B8B42
square
#1B2C8B #8B1B64 #8B7A1B #1B8B42
split-complementary
#1B2C8B #8B421B #648B1B
monochromatic
#070C25 #111C58 #1B2C8B #253CBE #455CDB

Accessibility & contrast

On white

11.80
#1B2C8B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.78
#1B2C8B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C8B
11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B2C8B#FFFFFF#000000##FFFFFF
##1B2C8B1.0011.801.7811.80
#FFFFFF11.801.0021.001.00
#0000001.7821.001.0021.00
##FFFFFF11.801.0021.001.00

Color blindness preview

Protanopia (red-blind)
#003D8E
Deuteranopia (green-blind)
#003289
Tritanopia (blue-blind)
#004657
Achromatopsia (no color)
#383838

Design tokens & code

CSS
--color: #1b2c8b;
/* rgb */ color: rgb(27, 44, 139);
/* oklch */ color: oklch(35.1% 0.158 268.5);
Tailwind
colors: {
  custom: {
    50: '#6c65ae',
    500: '#1b2c8b',
    950: '#000000',
  },
}
SCSS
$custom: #1b2c8b;
$custom-light: #6c65ae;
$custom-dark: #000000;
JSON
{
  "hex": "#1b2c8b",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 139
  },
  "hsl": {
    "h": 230.893,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35087,
    "c": 0.15762,
    "h": 268.5
  },
  "luminance": 0.03898
}

Semantic roles & 50–950 ramp

primary
#1B2C8B
secondary
#BCAA45
accent
#D03DEA
background
#F7F6FA
surface
#EDEBF4
border
#C8C6CE
text
#080510
muted
#7B7A7F

Preview Lab

Preview with #1B2C8B

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

Preview Lab → · Contrast checker → · Palette generator →

#1B2C8B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva