#1B4F79#1B4F79

#1B4F79 is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.5% C 0.089 H 246.7°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F79
RGB	rgb(27, 79, 121)
HSL	hsl(207, 64%, 29%)
HSV	hsv(207, 78%, 47%)
CMYK	cmyk(77.7%, 34.7%, 0%, 52.5%)
CIE-LAB	lab(32.27, -1.53, -28.78)
CIE-LCH	lch(32.27, 28.82, 266.96°)
OKLab	oklab(41.48% -0.0351 -0.0817)
OKLCH	oklch(41.48% 0.089 246.7)
XYZ	xyz(6.6978, 7.2047, 19.1231)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F79 #79451B

analogous

#1B7974 #1B4F79 #1B2079

triadic

#1B4F79 #791B4F #4F791B

tetradic

#1B4F79 #741B79 #79451B #20791B

square

#1B4F79 #741B79 #79451B #20791B

split-complementary

#1B4F79 #791B20 #79741B

monochromatic

#061019 #102E47 #1B4F79 #2670AB #3B8FD3

Accessibility & contrast

On white

8.60

#1B4F79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#1B4F79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F79

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F79	#FFFFFF	#000000	##FFFFFF
##1B4F79	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C517B

Deuteranopia (green-blind)

#2E4878

Tritanopia (blue-blind)

#00595E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4f79;
/* rgb */ color: rgb(27, 79, 121);
/* oklch */ color: oklch(41.5% 0.089 246.7);

Tailwind

colors: {
  custom: {
    50: '#6680a0',
    500: '#1b4f79',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f79;
$custom-light: #6680a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f79",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 121
  },
  "hsl": {
    "h": 206.809,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.4148,
    "c": 0.08895,
    "h": 246.7
  },
  "luminance": 0.07205
}

Semantic roles & 50–950 ramp

primary

#1B4F79

secondary

#AD7243

accent

#8B41E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4F79

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

Preview Lab → · Contrast checker → · Palette generator →