#1B4569#1B4569

#1B4569 is a dark, moderate cyan. Relative luminance 0.055; OKLCH L 37.9% C 0.077 H 247.5°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#1B4569
RGB	rgb(27, 69, 105)
HSL	hsl(208, 59%, 26%)
HSV	hsv(208, 74%, 41%)
CMYK	cmyk(74.3%, 34.3%, 0%, 58.8%)
CIE-LAB	lab(28.14, -1.30, -25.22)
CIE-LCH	lch(28.14, 25.25, 267.04°)
OKLab	oklab(37.94% -0.0296 -0.0715)
OKLCH	oklch(37.94% 0.077 247.5)
XYZ	xyz(5.1290, 5.5086, 14.1548)
Luminance	0.0551 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4569 #693F1B

analogous

#1B6966 #1B4569 #1B1E69

triadic

#1B4569 #691B45 #45691B

tetradic

#1B4569 #661B69 #693F1B #1E691B

square

#1B4569 #661B69 #693F1B #1E691B

split-complementary

#1B4569 #691B1E #69661B

monochromatic

#061018 #0E2538 #1B4569 #28659A #3485CA

Accessibility & contrast

On white

9.99

#1B4569 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1B4569 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4569

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4569	#FFFFFF	#000000	##FFFFFF
##1B4569	1.00	9.99	2.10	9.99
#FFFFFF	9.99	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35466B

Deuteranopia (green-blind)

#2A3F68

Tritanopia (blue-blind)

#004E52

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b4569;
/* rgb */ color: rgb(27, 69, 105);
/* oklch */ color: oklch(37.9% 0.077 247.5);

Tailwind

colors: {
  custom: {
    50: '#627894',
    500: '#1b4569',
    950: '#000000',
  },
}

SCSS

$custom: #1b4569;
$custom-light: #627894;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4569",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 105
  },
  "hsl": {
    "h": 207.692,
    "s": 59.091,
    "l": 25.882
  },
  "oklch": {
    "l": 0.3794,
    "c": 0.07736,
    "h": 247.5
  },
  "luminance": 0.05509
}

Semantic roles & 50–950 ramp

primary

#1B4569

secondary

#9E6C42

accent

#8E46E2

background

#F6F7F9

surface

#EBEDF1

border

#C6C8CB

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #1B4569

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

Preview Lab → · Contrast checker → · Palette generator →