#1B5D79#1B5D79

#1B5D79 is a mid, moderate cyan. Relative luminance 0.094; OKLCH L 45.1% C 0.079 H 230.7°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#1B5D79
RGB	rgb(27, 93, 121)
HSL	hsl(198, 64%, 29%)
HSV	hsv(198, 78%, 47%)
CMYK	cmyk(77.7%, 23.1%, 0%, 52.5%)
CIE-LAB	lab(36.82, -10.24, -21.66)
CIE-LCH	lch(36.82, 23.96, 244.69°)
OKLab	oklab(45.09% -0.0498 -0.0609)
OKLCH	oklch(45.09% 0.079 230.7)
XYZ	xyz(7.8161, 9.4413, 19.4959)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5D79 #79371B

analogous

#1B7966 #1B5D79 #1B2E79

triadic

#1B5D79 #791B5D #5D791B

tetradic

#1B5D79 #661B79 #79371B #2E791B

square

#1B5D79 #661B79 #79371B #2E791B

split-complementary

#1B5D79 #791B2E #79661B

monochromatic

#061319 #103747 #1B5D79 #2683AB #3BA6D3

Accessibility & contrast

On white

7.27

#1B5D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#1B5D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D79

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5D79	#FFFFFF	#000000	##FFFFFF
##1B5D79	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F5C7A

Deuteranopia (green-blind)

#425379

Tritanopia (blue-blind)

#006566

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b5d79;
/* rgb */ color: rgb(27, 93, 121);
/* oklch */ color: oklch(45.1% 0.079 230.7);

Tailwind

colors: {
  custom: {
    50: '#668a9f',
    500: '#1b5d79',
    950: '#000000',
  },
}

SCSS

$custom: #1b5d79;
$custom-light: #668a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5d79",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 121
  },
  "hsl": {
    "h": 197.872,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.45091,
    "c": 0.07863,
    "h": 230.7
  },
  "luminance": 0.09442
}

Semantic roles & 50–950 ramp

primary

#1B5D79

secondary

#AD6243

accent

#7241E7

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070B0E

muted

#7A7C7E

Preview Lab

Preview with #1B5D79

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

Preview Lab → · Contrast checker → · Palette generator →