#1B4E79#1B4E79

#1B4E79 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.2% C 0.090 H 247.7°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E79
RGB	rgb(27, 78, 121)
HSL	hsl(207, 64%, 29%)
HSV	hsv(207, 78%, 47%)
CMYK	cmyk(77.7%, 35.5%, 0%, 52.5%)
CIE-LAB	lab(31.95, -0.88, -29.29)
CIE-LCH	lch(31.95, 29.30, 268.28°)
OKLab	oklab(41.23% -0.0341 -0.0832)
OKLCH	oklch(41.23% 0.09 247.7)
XYZ	xyz(6.6263, 7.0615, 19.0992)
Luminance	0.0706 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E79 #79461B

analogous

#1B7975 #1B4E79 #1B1F79

triadic

#1B4E79 #791B4E #4E791B

tetradic

#1B4E79 #751B79 #79461B #1F791B

square

#1B4E79 #751B79 #79461B #1F791B

split-complementary

#1B4E79 #791B1F #79751B

monochromatic

#061019 #102E47 #1B4E79 #266EAB #3B8ED3

Accessibility & contrast

On white

8.71

#1B4E79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1B4E79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E79

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E79	#FFFFFF	#000000	##FFFFFF
##1B4E79	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A507B

Deuteranopia (green-blind)

#2D4778

Tritanopia (blue-blind)

#00585E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4e79;
/* rgb */ color: rgb(27, 78, 121);
/* oklch */ color: oklch(41.2% 0.090 247.7);

Tailwind

colors: {
  custom: {
    50: '#667fa0',
    500: '#1b4e79',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e79;
$custom-light: #667fa0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e79",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 121
  },
  "hsl": {
    "h": 207.447,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.41227,
    "c": 0.08993,
    "h": 247.7
  },
  "luminance": 0.07062
}

Semantic roles & 50–950 ramp

primary

#1B4E79

secondary

#AD7343

accent

#8D41E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4E79

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

Preview Lab → · Contrast checker → · Palette generator →