#1B424F#1B424F

#1B424F is a dark, muted cyan. Relative luminance 0.047; OKLCH L 35.7% C 0.049 H 222.7°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX#1B424F
RGBrgb(27, 66, 79)
HSLhsl(195, 49%, 21%)
HSVhsv(195, 66%, 31%)
CMYKcmyk(65.8%, 16.5%, 0%, 69%)
CIE-LABlab(25.84, -9.23, -11.97)
CIE-LCHlch(25.84, 15.12, 232.38°)
OKLaboklab(35.7% -0.0361 -0.0333)
OKLCHoklch(35.7% 0.049 222.7)
XYZxyz(3.8109, 4.6936, 8.1007)
Luminance0.0469 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B424F #4F281B
analogous
#1B4F42 #1B424F #1B284F
triadic
#1B424F #4F1B42 #424F1B
tetradic
#1B424F #421B4F #4F281B #284F1B
square
#1B424F #421B4F #4F281B #284F1B
split-complementary
#1B424F #4F1B28 #4F421B
monochromatic
#081317 #0B1C21 #1B424F #2B687D #3A8EAA

Accessibility & contrast

On white

10.83
#1B424F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.94
#1B424F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B424F
10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B424F#FFFFFF#000000##FFFFFF
##1B424F1.0010.831.9410.83
#FFFFFF10.831.0021.001.00
#0000001.9421.001.0021.00
##FFFFFF10.831.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3A4050
Deuteranopia (green-blind)
#333B4F
Tritanopia (blue-blind)
#004646
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #1b424f;
/* rgb */ color: rgb(27, 66, 79);
/* oklch */ color: oklch(35.7% 0.049 222.7);
Tailwind
colors: {
  custom: {
    50: '#5d7680',
    500: '#1b424f',
    950: '#000000',
  },
}
SCSS
$custom: #1b424f;
$custom-light: #5d7680;
$custom-dark: #000000;
JSON
{
  "hex": "#1b424f",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 79
  },
  "hsl": {
    "h": 195,
    "s": 49.057,
    "l": 20.784
  },
  "oklch": {
    "l": 0.35699,
    "c": 0.04913,
    "h": 222.7
  },
  "luminance": 0.04694
}

Semantic roles & 50–950 ramp

primary
#1B424F
secondary
#855241
accent
#724FD9
background
#F5F7F7
surface
#E9EDEE
border
#C5C8C9
text
#05080A
muted
#797B7C

Preview Lab

Preview with #1B424F

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

Preview Lab → · Contrast checker → · Palette generator →

#1B424F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva