#1B4F78#1B4F78

#1B4F78 is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.4% C 0.088 H 246.1°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F78
RGB	rgb(27, 79, 120)
HSL	hsl(206, 63%, 29%)
HSV	hsv(206, 78%, 47%)
CMYK	cmyk(77.5%, 34.2%, 0%, 52.9%)
CIE-LAB	lab(32.21, -1.92, -28.24)
CIE-LCH	lch(32.21, 28.31, 266.10°)
OKLab	oklab(41.42% -0.0354 -0.0801)
OKLCH	oklch(41.42% 0.088 246.1)
XYZ	xyz(6.6368, 7.1803, 18.8018)
Luminance	0.0718 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F78 #78441B

analogous

#1B7873 #1B4F78 #1B2178

triadic

#1B4F78 #781B4F #4F781B

tetradic

#1B4F78 #731B78 #78441B #21781B

square

#1B4F78 #731B78 #78441B #21781B

split-complementary

#1B4F78 #781B21 #78731B

monochromatic

#061019 #102E46 #1B4F78 #2670AA #3B90D3

Accessibility & contrast

On white

8.62

#1B4F78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#1B4F78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F78

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F78	#FFFFFF	#000000	##FFFFFF
##1B4F78	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C517A

Deuteranopia (green-blind)

#2F4877

Tritanopia (blue-blind)

#00595E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4f78;
/* rgb */ color: rgb(27, 79, 120);
/* oklch */ color: oklch(41.4% 0.088 246.1);

Tailwind

colors: {
  custom: {
    50: '#66809f',
    500: '#1b4f78',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f78;
$custom-light: #66809f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f78",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 120
  },
  "hsl": {
    "h": 206.452,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.41419,
    "c": 0.08764,
    "h": 246.1
  },
  "luminance": 0.07181
}

Semantic roles & 50–950 ramp

primary

#1B4F78

secondary

#AC7143

accent

#8A41E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4F78

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

Preview Lab → · Contrast checker → · Palette generator →