#1D548B#1D548B

#1D548B is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.9% C 0.107 H 251.7°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX#1D548B
RGBrgb(29, 84, 139)
HSLhsl(210, 65%, 33%)
HSVhsv(210, 79%, 55%)
CMYKcmyk(79.1%, 39.6%, 0%, 45.5%)
CIE-LABlab(34.93, 2.60, -35.65)
CIE-LCHlch(34.93, 35.74, 274.18°)
OKLaboklab(43.92% -0.0337 -0.1017)
OKLCHoklch(43.92% 0.107 251.7)
XYZxyz(8.3355, 8.4650, 25.6157)
Luminance0.0847 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D548B #8B541D
analogous
#1D8B8B #1D548B #1D1D8B
triadic
#1D548B #8B1D54 #548B1D
tetradic
#1D548B #8B1D8B #8B541D #1D8B1D
square
#1D548B #8B1D8B #8B541D #1D8B1D
split-complementary
#1D548B #8B1D1D #8B8B1D
monochromatic
#081726 #123558 #1D548B #2873BE #4991D9

Accessibility & contrast

On white

7.80
#1D548B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.69
#1D548B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D548B
7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D548B#FFFFFF#000000##FFFFFF
##1D548B1.007.802.697.80
#FFFFFF7.801.0021.001.00
#0000002.6921.001.0021.00
##FFFFFF7.801.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3A588D
Deuteranopia (green-blind)
#294E8A
Tritanopia (blue-blind)
#006168
Achromatopsia (no color)
#525252

Design tokens & code

CSS
--color: #1d548b;
/* rgb */ color: rgb(29, 84, 139);
/* oklch */ color: oklch(43.9% 0.107 251.7);
Tailwind
colors: {
  custom: {
    50: '#6a83ad',
    500: '#1d548b',
    950: '#000000',
  },
}
SCSS
$custom: #1d548b;
$custom-light: #6a83ad;
$custom-dark: #000000;
JSON
{
  "hex": "#1d548b",
  "rgb": {
    "r": 29,
    "g": 84,
    "b": 139
  },
  "hsl": {
    "h": 210,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.43921,
    "c": 0.10714,
    "h": 251.7
  },
  "luminance": 0.08466
}

Semantic roles & 50–950 ramp

primary
#1D548B
secondary
#BB8249
accent
#943FE8
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070A10
muted
#7A7C7F

Preview Lab

Preview with #1D548B

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

Preview Lab → · Contrast checker → · Palette generator →

#1D548B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva