#1B596B#1B596B

#1B596B is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.3% C 0.068 H 221.1°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B596B
RGB	rgb(27, 89, 107)
HSL	hsl(194, 60%, 26%)
HSV	hsv(194, 75%, 42%)
CMYK	cmyk(74.8%, 16.8%, 0%, 58%)
CIE-LAB	lab(34.88, -13.00, -15.99)
CIE-LCH	lch(34.88, 20.61, 230.89°)
OKLab	oklab(43.33% -0.0511 -0.0447)
OKLCH	oklch(43.33% 0.068 221.1)
XYZ	xyz(6.6771, 8.4385, 15.1840)
Luminance	0.0844 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B596B #6B2D1B

analogous

#1B6B55 #1B596B #1B316B

triadic

#1B596B #6B1B59 #596B1B

tetradic

#1B596B #551B6B #6B2D1B #316B1B

square

#1B596B #551B6B #6B2D1B #316B1B

split-complementary

#1B596B #6B1B31 #6B551B

monochromatic

#061418 #0F303A #1B596B #27829C #35AACC

Accessibility & contrast

On white

7.81

#1B596B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1B596B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B596B

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B596B	#FFFFFF	#000000	##FFFFFF
##1B596B	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E576C

Deuteranopia (green-blind)

#434F6B

Tritanopia (blue-blind)

#005F5F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b596b;
/* rgb */ color: rgb(27, 89, 107);
/* oklch */ color: oklch(43.3% 0.068 221.1);

Tailwind

colors: {
  custom: {
    50: '#648895',
    500: '#1b596b',
    950: '#000000',
  },
}

SCSS

$custom: #1b596b;
$custom-light: #648895;
$custom-dark: #000000;

JSON

{
  "hex": "#1b596b",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 107
  },
  "hsl": {
    "h": 193.5,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.43334,
    "c": 0.06791,
    "h": 221.1
  },
  "luminance": 0.08439
}

Semantic roles & 50–950 ramp

primary

#1B596B

secondary

#A05742

accent

#6845E3

background

#F6F8F9

surface

#EBEFF1

border

#C6CACB

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #1B596B

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

Preview Lab → · Contrast checker → · Palette generator →