#1D4B74#1D4B74

#1D4B74 is a dark, moderate cyan. Relative luminance 0.066; OKLCH L 40.2% C 0.085 H 248.6°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX#1D4B74
RGBrgb(29, 75, 116)
HSLhsl(208, 60%, 28%)
HSVhsv(208, 75%, 45%)
CMYKcmyk(75%, 35.3%, 0%, 54.5%)
CIE-LABlab(30.77, -0.60, -28.02)
CIE-LCHlch(30.77, 28.03, 268.78°)
OKLaboklab(40.23% -0.0312 -0.0795)
OKLCHoklch(40.23% 0.085 248.6)
XYZxyz(6.1740, 6.5536, 17.4592)
Luminance0.0655 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D4B74 #74461D
analogous
#1D7471 #1D4B74 #1D1F74
triadic
#1D4B74 #741D4B #4B741D
tetradic
#1D4B74 #711D74 #74461D #1F741D
square
#1D4B74 #711D74 #74461D #1F741D
split-complementary
#1D4B74 #741D1F #74711D
monochromatic
#061018 #112B43 #1D4B74 #296BA5 #3D8ACE

Accessibility & contrast

On white

9.09
#1D4B74 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.31
#1D4B74 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B74
9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D4B74#FFFFFF#000000##FFFFFF
##1D4B741.009.092.319.09
#FFFFFF9.091.0021.001.00
#0000002.3121.001.0021.00
##FFFFFF9.091.0021.001.00

Color blindness preview

Protanopia (red-blind)
#384D76
Deuteranopia (green-blind)
#2C4573
Tritanopia (blue-blind)
#00555A
Achromatopsia (no color)
#484848

Design tokens & code

CSS
--color: #1d4b74;
/* rgb */ color: rgb(29, 75, 116);
/* oklch */ color: oklch(40.2% 0.085 248.6);
Tailwind
colors: {
  custom: {
    50: '#657d9c',
    500: '#1d4b74',
    950: '#000000',
  },
}
SCSS
$custom: #1d4b74;
$custom-light: #657d9c;
$custom-dark: #000000;
JSON
{
  "hex": "#1d4b74",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 116
  },
  "hsl": {
    "h": 208.276,
    "s": 60,
    "l": 28.431
  },
  "oklch": {
    "l": 0.40228,
    "c": 0.08545,
    "h": 248.6
  },
  "luminance": 0.06554
}

Semantic roles & 50–950 ramp

primary
#1D4B74
secondary
#A87445
accent
#8F45E3
background
#F6F7F9
surface
#EBEEF2
border
#C6C9CC
text
#06090E
muted
#7A7B7E

Preview Lab

Preview with #1D4B74

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

Preview Lab → · Contrast checker → · Palette generator →

#1D4B74 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva