#1B4B7C#1B4B7C

#1B4B7C is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.7% C 0.097 H 251.9°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX#1B4B7C
RGBrgb(27, 75, 124)
HSLhsl(210, 64%, 30%)
HSVhsv(210, 78%, 49%)
CMYKcmyk(78.2%, 39.5%, 0%, 51.4%)
CIE-LABlab(31.16, 2.29, -32.41)
CIE-LCHlch(31.16, 32.49, 274.04°)
OKLaboklab(40.67% -0.0302 -0.0924)
OKLCHoklch(40.67% 0.097 251.9)
XYZxyz(6.6048, 6.7196, 20.0138)
Luminance0.0672 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B4B7C #7C4C1B
analogous
#1B7C7C #1B4B7C #1C1B7C
triadic
#1B4B7C #7C1B4B #4B7C1B
tetradic
#1B4B7C #7C1B7C #7C4C1B #1B7C1C
square
#1B4B7C #7C1B7C #7C4C1B #1B7C1C
split-complementary
#1B4B7C #7C1C1B #7C7C1B
monochromatic
#050F19 #102D4A #1B4B7C #2669AE #3D88D5

Accessibility & contrast

On white

8.96
#1B4B7C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.34
#1B4B7C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B7C
8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B4B7C#FFFFFF#000000##FFFFFF
##1B4B7C1.008.962.348.96
#FFFFFF8.961.0021.001.00
#0000002.3421.001.0021.00
##FFFFFF8.961.0021.001.00

Color blindness preview

Protanopia (red-blind)
#344E7E
Deuteranopia (green-blind)
#25457B
Tritanopia (blue-blind)
#00575D
Achromatopsia (no color)
#494949

Design tokens & code

CSS
--color: #1b4b7c;
/* rgb */ color: rgb(27, 75, 124);
/* oklch */ color: oklch(40.7% 0.097 251.9);
Tailwind
colors: {
  custom: {
    50: '#667ca2',
    500: '#1b4b7c',
    950: '#000000',
  },
}
SCSS
$custom: #1b4b7c;
$custom-light: #667ca2;
$custom-dark: #000000;
JSON
{
  "hex": "#1b4b7c",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 124
  },
  "hsl": {
    "h": 210.309,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.40666,
    "c": 0.09721,
    "h": 251.9
  },
  "luminance": 0.0672
}

Semantic roles & 50–950 ramp

primary
#1B4B7C
secondary
#B07A43
accent
#9541E7
background
#F6F7FA
surface
#EBEEF3
border
#C6C9CD
text
#07090F
muted
#7A7B7F

Preview Lab

Preview with #1B4B7C

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

Preview Lab → · Contrast checker → · Palette generator →

#1B4B7C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva