#1B429B#1B429B

#1B429B is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.9% C 0.152 H 263.4°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX#1B429B
RGBrgb(27, 66, 155)
HSLhsl(222, 70%, 36%)
HSVhsv(222, 83%, 61%)
CMYKcmyk(82.6%, 57.4%, 0%, 39.2%)
CIE-LABlab(30.63, 20.97, -52.33)
CIE-LCHlch(30.63, 56.37, 291.84°)
OKLaboklab(40.95% -0.0176 -0.1511)
OKLCHoklch(40.95% 0.152 263.4)
XYZxyz(8.3145, 6.4950, 31.8194)
Luminance0.0650 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B429B #9B741B
analogous
#1B829B #1B429B #341B9B
triadic
#1B429B #9B1B42 #429B1B
tetradic
#1B429B #9B1B82 #9B741B #1B9B34
square
#1B429B #9B1B82 #9B741B #1B9B34
split-complementary
#1B429B #9B341B #829B1B
monochromatic
#091633 #122C67 #1B429B #2458CF #507CE0

Accessibility & contrast

On white

9.13
#1B429B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.30
#1B429B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B429B
9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B429B#FFFFFF#000000##FFFFFF
##1B429B1.009.132.309.13
#FFFFFF9.131.0021.001.00
#0000002.3021.001.0021.00
##FFFFFF9.131.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004E9E
Deuteranopia (green-blind)
#004299
Tritanopia (blue-blind)
#005868
Achromatopsia (no color)
#484848

Design tokens & code

CSS
--color: #1b429b;
/* rgb */ color: rgb(27, 66, 155);
/* oklch */ color: oklch(40.9% 0.152 263.4);
Tailwind
colors: {
  custom: {
    50: '#6e75b9',
    500: '#1b429b',
    950: '#000000',
  },
}
SCSS
$custom: #1b429b;
$custom-light: #6e75b9;
$custom-dark: #000000;
JSON
{
  "hex": "#1b429b",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 155
  },
  "hsl": {
    "h": 221.719,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.40947,
    "c": 0.15216,
    "h": 263.4
  },
  "luminance": 0.06496
}

Semantic roles & 50–950 ramp

primary
#1B429B
secondary
#C3A04F
accent
#B73BED
background
#F7F7FB
surface
#EDEDF6
border
#C8C8D0
text
#090812
muted
#7B7B81

Preview Lab

Preview with #1B429B

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

Preview Lab → · Contrast checker → · Palette generator →

#1B429B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva