#1B5973#1B5973

#1B5973 is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.7% C 0.075 H 230.2°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#1B5973
RGB	rgb(27, 89, 115)
HSL	hsl(198, 62%, 28%)
HSV	hsv(198, 77%, 45%)
CMYK	cmyk(76.5%, 22.6%, 0%, 54.9%)
CIE-LAB	lab(35.23, -10.08, -20.42)
CIE-LCH	lch(35.23, 22.77, 243.74°)
OKLab	oklab(43.73% -0.0478 -0.0573)
OKLCH	oklch(43.73% 0.075 230.2)
XYZ	xyz(7.1176, 8.6147, 17.5040)
Luminance	0.0862 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5973 #73351B

analogous

#1B7361 #1B5973 #1B2D73

triadic

#1B5973 #731B59 #59731B

tetradic

#1B5973 #611B73 #73351B #2D731B

square

#1B5973 #611B73 #73351B #2D731B

split-complementary

#1B5973 #731B2D #73611B

monochromatic

#061319 #0F3341 #1B5973 #277FA5 #38A3D0

Accessibility & contrast

On white

7.71

#1B5973 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1B5973 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5973

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5973	#FFFFFF	#000000	##FFFFFF
##1B5973	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5874

Deuteranopia (green-blind)

#404F73

Tritanopia (blue-blind)

#006062

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b5973;
/* rgb */ color: rgb(27, 89, 115);
/* oklch */ color: oklch(43.7% 0.075 230.2);

Tailwind

colors: {
  custom: {
    50: '#65879b',
    500: '#1b5973',
    950: '#000000',
  },
}

SCSS

$custom: #1b5973;
$custom-light: #65879b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5973",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 115
  },
  "hsl": {
    "h": 197.727,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.43732,
    "c": 0.07468,
    "h": 230.2
  },
  "luminance": 0.08616
}

Semantic roles & 50–950 ramp

primary

#1B5973

secondary

#A86042

accent

#7343E5

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0E

muted

#7A7C7E

Preview Lab

Preview with #1B5973

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

Preview Lab → · Contrast checker → · Palette generator →