#1B424C#1B424C

#1B424C is a dark, muted cyan. Relative luminance 0.047; OKLCH L 35.6% C 0.047 H 217.1°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B424C
RGB	rgb(27, 66, 76)
HSL	hsl(192, 48%, 20%)
HSV	hsv(192, 64%, 30%)
CMYK	cmyk(64.5%, 13.2%, 0%, 70.2%)
CIE-LAB	lab(25.72, -10.29, -10.20)
CIE-LCH	lch(25.72, 14.49, 224.75°)
OKLab	oklab(35.56% -0.0375 -0.0283)
OKLCH	oklch(35.56% 0.047 217.1)
XYZ	xyz(3.7042, 4.6509, 7.5386)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B424C #4C251B

analogous

#1B4C3D #1B424C #1B294C

triadic

#1B424C #4C1B42 #424C1B

tetradic

#1B424C #3D1B4C #4C251B #294C1B

square

#1B424C #3D1B4C #4C251B #294C1B

split-complementary

#1B424C #4C1B29 #4C3D1B

monochromatic

#081417 #0B1B1F #1B424C #2B6979 #3B90A6

Accessibility & contrast

On white

10.88

#1B424C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1B424C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B424C

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B424C	#FFFFFF	#000000	##FFFFFF
##1B424C	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B404D

Deuteranopia (green-blind)

#343B4C

Tritanopia (blue-blind)

#004645

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b424c;
/* rgb */ color: rgb(27, 66, 76);
/* oklch */ color: oklch(35.6% 0.047 217.1);

Tailwind

colors: {
  custom: {
    50: '#5d767e',
    500: '#1b424c',
    950: '#000000',
  },
}

SCSS

$custom: #1b424c;
$custom-light: #5d767e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b424c",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 76
  },
  "hsl": {
    "h": 192.245,
    "s": 47.573,
    "l": 20.196
  },
  "oklch": {
    "l": 0.35555,
    "c": 0.04698,
    "h": 217.1
  },
  "luminance": 0.04651
}

Semantic roles & 50–950 ramp

primary

#1B424C

secondary

#824E41

accent

#6C51D7

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #1B424C

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

Preview Lab → · Contrast checker → · Palette generator →