#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
RGB	rgb(27, 66, 79)
HSL	hsl(195, 49%, 21%)
HSV	hsv(195, 66%, 31%)
CMYK	cmyk(65.8%, 16.5%, 0%, 69%)
CIE-LAB	lab(25.84, -9.23, -11.97)
CIE-LCH	lch(25.84, 15.12, 232.38°)
OKLab	oklab(35.7% -0.0361 -0.0333)
OKLCH	oklch(35.7% 0.049 222.7)
XYZ	xyz(3.8109, 4.6936, 8.1007)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	cyan

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
##1B424F	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

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.

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