#1B4C78#1B4C78

#1B4C78 is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 40.7% C 0.091 H 249.1°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B4C78
RGB	rgb(27, 76, 120)
HSL	hsl(208, 63%, 29%)
HSV	hsv(208, 78%, 47%)
CMYK	cmyk(77.5%, 36.7%, 0%, 52.9%)
CIE-LAB	lab(31.25, 0.03, -29.77)
CIE-LCH	lch(31.25, 29.77, 270.06°)
OKLab	oklab(40.66% -0.0324 -0.0846)
OKLCH	oklch(40.66% 0.091 249.1)
XYZ	xyz(6.4253, 6.7572, 18.7313)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4C78 #78471B

analogous

#1B7876 #1B4C78 #1B1E78

triadic

#1B4C78 #781B4C #4C781B

tetradic

#1B4C78 #761B78 #78471B #1E781B

square

#1B4C78 #761B78 #78471B #1E781B

split-complementary

#1B4C78 #781B1E #78761B

monochromatic

#061019 #102C46 #1B4C78 #266CAA #3B8BD3

Accessibility & contrast

On white

8.93

#1B4C78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1B4C78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4C78

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4C78	#FFFFFF	#000000	##FFFFFF
##1B4C78	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#384E7A

Deuteranopia (green-blind)

#2A4677

Tritanopia (blue-blind)

#00565C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4c78;
/* rgb */ color: rgb(27, 76, 120);
/* oklch */ color: oklch(40.7% 0.091 249.1);

Tailwind

colors: {
  custom: {
    50: '#657d9f',
    500: '#1b4c78',
    950: '#000000',
  },
}

SCSS

$custom: #1b4c78;
$custom-light: #657d9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4c78",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 120
  },
  "hsl": {
    "h": 208.387,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.40659,
    "c": 0.09063,
    "h": 249.1
  },
  "luminance": 0.06758
}

Semantic roles & 50–950 ramp

primary

#1B4C78

secondary

#AC7543

accent

#8F41E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4C78

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

Preview Lab → · Contrast checker → · Palette generator →