#1B3D86#1B3D86

#1B3D86 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.1% C 0.129 H 263.0°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX#1B3D86
RGBrgb(27, 61, 134)
HSLhsl(221, 66%, 32%)
HSVhsv(221, 80%, 53%)
CMYKcmyk(79.9%, 54.5%, 0%, 47.5%)
CIE-LABlab(27.55, 15.94, -44.43)
CIE-LCHlch(27.55, 47.20, 289.74°)
OKLaboklab(38.1% -0.0158 -0.128)
OKLCHoklch(38.1% 0.129 263)
XYZxyz(6.4223, 5.2910, 23.2324)
Luminance0.0529 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B3D86 #86641B
analogous
#1B7386 #1B3D86 #2F1B86
triadic
#1B3D86 #861B3D #3D861B
tetradic
#1B3D86 #861B73 #86641B #1B862F
square
#1B3D86 #861B73 #86641B #1B862F
split-complementary
#1B3D86 #862F1B #73861B
monochromatic
#060F20 #112653 #1B3D86 #2554B9 #4272D9

Accessibility & contrast

On white

10.20
#1B3D86 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.06
#1B3D86 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3D86
10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B3D86#FFFFFF#000000##FFFFFF
##1B3D861.0010.202.0610.20
#FFFFFF10.201.0021.001.00
#0000002.0621.001.0021.00
##FFFFFF10.201.0021.001.00

Color blindness preview

Protanopia (red-blind)
#064689
Deuteranopia (green-blind)
#003C85
Tritanopia (blue-blind)
#004F5B
Achromatopsia (no color)
#414141

Design tokens & code

CSS
--color: #1b3d86;
/* rgb */ color: rgb(27, 61, 134);
/* oklch */ color: oklch(38.1% 0.129 263.0);
Tailwind
colors: {
  custom: {
    50: '#6971aa',
    500: '#1b3d86',
    950: '#000000',
  },
}
SCSS
$custom: #1b3d86;
$custom-light: #6971aa;
$custom-dark: #000000;
JSON
{
  "hex": "#1b3d86",
  "rgb": {
    "r": 27,
    "g": 61,
    "b": 134
  },
  "hsl": {
    "h": 220.935,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38097,
    "c": 0.12898,
    "h": 263
  },
  "luminance": 0.05292
}

Semantic roles & 50–950 ramp

primary
#1B3D86
secondary
#B99444
accent
#B33EE9
background
#F6F6FA
surface
#ECECF4
border
#C7C7CE
text
#070710
muted
#7A7A7F

Preview Lab

Preview with #1B3D86

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

Preview Lab → · Contrast checker → · Palette generator →

#1B3D86 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva