#1F4A73#1F4A73

#1F4A73 is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 40.0% C 0.084 H 249.8°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX#1F4A73
RGBrgb(31, 74, 115)
HSLhsl(209, 58%, 29%)
HSVhsv(209, 73%, 45%)
CMYKcmyk(73%, 35.7%, 0%, 54.9%)
CIE-LABlab(30.46, -0.01, -27.87)
CIE-LCHlch(30.46, 27.87, 269.99°)
OKLaboklab(39.99% -0.0291 -0.0791)
OKLCHoklch(39.99% 0.084 249.8)
XYZxyz(6.1072, 6.4260, 17.1348)
Luminance0.0643 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1F4A73 #73481F
analogous
#1F7372 #1F4A73 #1F2073
triadic
#1F4A73 #731F4A #4A731F
tetradic
#1F4A73 #721F73 #73481F #20731F
square
#1F4A73 #721F73 #73481F #20731F
split-complementary
#1F4A73 #731F20 #73721F
monochromatic
#061018 #122B43 #1F4A73 #2C69A3 #4188CC

Accessibility & contrast

On white

9.19
#1F4A73 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.29
#1F4A73 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4A73
9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1F4A73#FFFFFF#000000##FFFFFF
##1F4A731.009.192.299.19
#FFFFFF9.191.0021.001.00
#0000002.2921.001.0021.00
##FFFFFF9.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#384C75
Deuteranopia (green-blind)
#2C4472
Tritanopia (blue-blind)
#005459
Achromatopsia (no color)
#484848

Design tokens & code

CSS
--color: #1f4a73;
/* rgb */ color: rgb(31, 74, 115);
/* oklch */ color: oklch(40.0% 0.084 249.8);
Tailwind
colors: {
  custom: {
    50: '#667c9b',
    500: '#1f4a73',
    950: '#000000',
  },
}
SCSS
$custom: #1f4a73;
$custom-light: #667c9b;
$custom-dark: #000000;
JSON
{
  "hex": "#1f4a73",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 115
  },
  "hsl": {
    "h": 209.286,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.3999,
    "c": 0.08426,
    "h": 249.8
  },
  "luminance": 0.06427
}

Semantic roles & 50–950 ramp

primary
#1F4A73
secondary
#A77647
accent
#9247E1
background
#F6F7F9
surface
#EBEEF2
border
#C6C9CC
text
#06090E
muted
#7A7B7E

Preview Lab

Preview with #1F4A73

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

Preview Lab → · Contrast checker → · Palette generator →

#1F4A73 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva