#1B387D#1B387D

#1B387D is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.2% C 0.122 H 264.0°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX#1B387D
RGBrgb(27, 56, 125)
HSLhsl(222, 64%, 30%)
HSVhsv(222, 78%, 49%)
CMYKcmyk(78.4%, 55.2%, 0%, 51%)
CIE-LABlab(25.39, 15.78, -42.30)
CIE-LCHlch(25.39, 45.15, 290.46°)
OKLaboklab(36.24% -0.0127 -0.1218)
OKLCHoklch(36.24% 0.123 264)
XYZxyz(5.5665, 4.5414, 19.9813)
Luminance0.0454 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B387D #7D601B
analogous
#1B697D #1B387D #2F1B7D
triadic
#1B387D #7D1B38 #387D1B
tetradic
#1B387D #7D1B69 #7D601B #1B7D2F
square
#1B387D #7D1B69 #7D601B #1B7D2F
split-complementary
#1B387D #7D2F1B #697D1B
monochromatic
#050B19 #10214B #1B387D #264FAF #3D6AD5

Accessibility & contrast

On white

11.00
#1B387D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.91
#1B387D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B387D
11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B387D#FFFFFF#000000##FFFFFF
##1B387D1.0011.001.9111.00
#FFFFFF11.001.0021.001.00
#0000001.9121.001.0021.00
##FFFFFF11.001.0021.001.00

Color blindness preview

Protanopia (red-blind)
#04417F
Deuteranopia (green-blind)
#00387C
Tritanopia (blue-blind)
#004954
Achromatopsia (no color)
#3C3C3C

Design tokens & code

CSS
--color: #1b387d;
/* rgb */ color: rgb(27, 56, 125);
/* oklch */ color: oklch(36.2% 0.122 264.0);
Tailwind
colors: {
  custom: {
    50: '#676ea3',
    500: '#1b387d',
    950: '#000000',
  },
}
SCSS
$custom: #1b387d;
$custom-light: #676ea3;
$custom-dark: #000000;
JSON
{
  "hex": "#1b387d",
  "rgb": {
    "r": 27,
    "g": 56,
    "b": 125
  },
  "hsl": {
    "h": 222.245,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36237,
    "c": 0.1225,
    "h": 264
  },
  "luminance": 0.04542
}

Semantic roles & 50–950 ramp

primary
#1B387D
secondary
#B19043
accent
#B640E7
background
#F6F6FA
surface
#EBEBF4
border
#C6C6CE
text
#07070F
muted
#7A7A7F

Preview Lab

Preview with #1B387D

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

Preview Lab → · Contrast checker → · Palette generator →

#1B387D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva