#1B596F#1B596F

#1B596F is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.5% C 0.071 H 225.9°. Best body text is #FFFFFF at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#1B596F
RGB	rgb(27, 89, 111)
HSL	hsl(196, 61%, 27%)
HSV	hsv(196, 76%, 44%)
CMYK	cmyk(75.7%, 19.8%, 0%, 56.5%)
CIE-LAB	lab(35.05, -11.55, -18.21)
CIE-LCH	lch(35.05, 21.57, 237.62°)
OKLab	oklab(43.53% -0.0495 -0.051)
OKLCH	oklch(43.53% 0.071 225.9)
XYZ	xyz(6.8924, 8.5247, 16.3180)
Luminance	0.0853 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B596F #6F311B

analogous

#1B6F5B #1B596F #1B2F6F

triadic

#1B596F #6F1B59 #596F1B

tetradic

#1B596F #5B1B6F #6F311B #2F6F1B

square

#1B596F #5B1B6F #6F311B #2F6F1B

split-complementary

#1B596F #6F1B2F #6F5B1B

monochromatic

#061419 #0F323E #1B596F #2780A0 #36A6CE

Accessibility & contrast

On white

7.76

#1B596F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1B596F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B596F

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B596F	#FFFFFF	#000000	##FFFFFF
##1B596F	1.00	7.76	2.71	7.76
#FFFFFF	7.76	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D5770

Deuteranopia (green-blind)

#424F6F

Tritanopia (blue-blind)

#005F60

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b596f;
/* rgb */ color: rgb(27, 89, 111);
/* oklch */ color: oklch(43.5% 0.071 225.9);

Tailwind

colors: {
  custom: {
    50: '#648898',
    500: '#1b596f',
    950: '#000000',
  },
}

SCSS

$custom: #1b596f;
$custom-light: #648898;
$custom-dark: #000000;

JSON

{
  "hex": "#1b596f",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 111
  },
  "hsl": {
    "h": 195.714,
    "s": 60.87,
    "l": 27.059
  },
  "oklch": {
    "l": 0.4353,
    "c": 0.07106,
    "h": 225.9
  },
  "luminance": 0.08525
}

Semantic roles & 50–950 ramp

primary

#1B596F

secondary

#A45C42

accent

#6E44E4

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #1B596F

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

Preview Lab → · Contrast checker → · Palette generator →