#1B436B#1B436B

#1B436B is a dark, moderate cyan. Relative luminance 0.053; OKLCH L 37.6% C 0.082 H 251.0°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX#1B436B
RGBrgb(27, 67, 107)
HSLhsl(210, 60%, 26%)
HSVhsv(210, 75%, 42%)
CMYKcmyk(74.8%, 37.4%, 0%, 58%)
CIE-LABlab(27.60, 0.82, -27.35)
CIE-LCHlch(27.60, 27.36, 271.72°)
OKLaboklab(37.55% -0.0268 -0.0777)
OKLCHoklch(37.55% 0.082 251)
XYZxyz(5.1120, 5.3083, 14.6623)
Luminance0.0531 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B436B #6B431B
analogous
#1B6B6B #1B436B #1B1B6B
triadic
#1B436B #6B1B43 #436B1B
tetradic
#1B436B #6B1B6B #6B431B #1B6B1B
square
#1B436B #6B1B6B #6B431B #1B6B1B
split-complementary
#1B436B #6B1B1B #6B6B1B
monochromatic
#060F18 #0F243A #1B436B #27629C #3580CC

Accessibility & contrast

On white

10.19
#1B436B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.06
#1B436B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B436B
10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B436B#FFFFFF#000000##FFFFFF
##1B436B1.0010.192.0610.19
#FFFFFF10.191.0021.001.00
#0000002.0621.001.0021.00
##FFFFFF10.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#31456D
Deuteranopia (green-blind)
#253E6A
Tritanopia (blue-blind)
#004C52
Achromatopsia (no color)
#414141

Design tokens & code

CSS
--color: #1b436b;
/* rgb */ color: rgb(27, 67, 107);
/* oklch */ color: oklch(37.6% 0.082 251.0);
Tailwind
colors: {
  custom: {
    50: '#637695',
    500: '#1b436b',
    950: '#000000',
  },
}
SCSS
$custom: #1b436b;
$custom-light: #637695;
$custom-dark: #000000;
JSON
{
  "hex": "#1b436b",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 107
  },
  "hsl": {
    "h": 210,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.37552,
    "c": 0.08221,
    "h": 251
  },
  "luminance": 0.05309
}

Semantic roles & 50–950 ramp

primary
#1B436B
secondary
#A07142
accent
#9445E3
background
#F6F7F9
surface
#EBEDF2
border
#C6C8CC
text
#06080D
muted
#7A7B7E

Preview Lab

Preview with #1B436B

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

Preview Lab → · Contrast checker → · Palette generator →

#1B436B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva