#1B475A#1B475A

#1B475A is a dark, muted cyan. Relative luminance 0.055; OKLCH L 37.6% C 0.058 H 229.5°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B475A
RGB	rgb(27, 71, 90)
HSL	hsl(198, 54%, 23%)
HSV	hsv(198, 70%, 35%)
CMYK	cmyk(70%, 21.1%, 0%, 64.7%)
CIE-LAB	lab(28.05, -8.34, -15.73)
CIE-LCH	lch(28.05, 17.80, 242.08°)
OKLab	oklab(37.63% -0.0375 -0.044)
OKLCH	oklch(37.63% 0.058 229.5)
XYZ	xyz(4.5500, 5.4772, 10.4883)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B475A #5A2E1B

analogous

#1B5A4D #1B475A #1B285A

triadic

#1B475A #5A1B47 #475A1B

tetradic

#1B475A #4D1B5A #5A2E1B #285A1B

square

#1B475A #4D1B5A #5A2E1B #285A1B

split-complementary

#1B475A #5A1B28 #5A4D1B

monochromatic

#071318 #0D222B #1B475A #296C89 #3791B8

Accessibility & contrast

On white

10.02

#1B475A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1B475A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B475A

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B475A	#FFFFFF	#000000	##FFFFFF
##1B475A	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D465B

Deuteranopia (green-blind)

#343F5A

Tritanopia (blue-blind)

#004C4D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b475a;
/* rgb */ color: rgb(27, 71, 90);
/* oklch */ color: oklch(37.6% 0.058 229.5);

Tailwind

colors: {
  custom: {
    50: '#607a88',
    500: '#1b475a',
    950: '#000000',
  },
}

SCSS

$custom: #1b475a;
$custom-light: #607a88;
$custom-dark: #000000;

JSON

{
  "hex": "#1b475a",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 90
  },
  "hsl": {
    "h": 198.095,
    "s": 53.846,
    "l": 22.941
  },
  "oklch": {
    "l": 0.37626,
    "c": 0.05782,
    "h": 229.5
  },
  "luminance": 0.05478
}

Semantic roles & 50–950 ramp

primary

#1B475A

secondary

#905941

accent

#774BDD

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05090B

muted

#797B7C

Preview Lab

Preview with #1B475A

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

Preview Lab → · Contrast checker → · Palette generator →