#1B3E5D#1B3E5D

#1B3E5D is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.4% C 0.068 H 247.8°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E5D
RGB	rgb(27, 62, 93)
HSL	hsl(208, 55%, 24%)
HSV	hsv(208, 71%, 36%)
CMYK	cmyk(71%, 33.3%, 0%, 63.5%)
CIE-LAB	lab(25.16, -1.36, -22.17)
CIE-LCH	lch(25.16, 22.21, 266.48°)
OKLab	oklab(35.38% -0.0256 -0.0627)
OKLCH	oklch(35.38% 0.068 247.8)
XYZ	xyz(4.1497, 4.4682, 10.9976)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E5D #5D3A1B

analogous

#1B5D5B #1B3E5D #1B1D5D

triadic

#1B3E5D #5D1B3E #3E5D1B

tetradic

#1B3E5D #5B1B5D #5D3A1B #1D5D1B

square

#1B3E5D #5B1B5D #5D3A1B #1D5D1B

split-complementary

#1B3E5D #5D1B1D #5D5B1B

monochromatic

#071018 #0D1E2E #1B3E5D #295E8C #377DBC

Accessibility & contrast

On white

11.09

#1B3E5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1B3E5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E5D

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E5D	#FFFFFF	#000000	##FFFFFF
##1B3E5D	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303F5E

Deuteranopia (green-blind)

#27395C

Tritanopia (blue-blind)

#004549

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1b3e5d;
/* rgb */ color: rgb(27, 62, 93);
/* oklch */ color: oklch(35.4% 0.068 247.8);

Tailwind

colors: {
  custom: {
    50: '#60738b',
    500: '#1b3e5d',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e5d;
$custom-light: #60738b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e5d",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 93
  },
  "hsl": {
    "h": 208.182,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35384,
    "c": 0.06772,
    "h": 247.8
  },
  "luminance": 0.04469
}

Semantic roles & 50–950 ramp

primary

#1B3E5D

secondary

#936741

accent

#8F49DE

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #1B3E5D

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

Preview Lab → · Contrast checker → · Palette generator →