#1B597A#1B597A

#1B597A is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.1% C 0.082 H 236.5°. Best body text is #FFFFFF at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B597A
RGB	rgb(27, 89, 122)
HSL	hsl(201, 64%, 29%)
HSV	hsv(201, 78%, 48%)
CMYK	cmyk(77.9%, 27%, 0%, 52.2%)
CIE-LAB	lab(35.56, -7.45, -24.23)
CIE-LCH	lch(35.56, 25.35, 252.92°)
OKLab	oklab(44.1% -0.0452 -0.0683)
OKLCH	oklch(44.1% 0.082 236.5)
XYZ	xyz(7.5358, 8.7820, 19.7065)
Luminance	0.0878 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B597A #7A3C1B

analogous

#1B7A6C #1B597A #1B2A7A

triadic

#1B597A #7A1B59 #597A1B

tetradic

#1B597A #6C1B7A #7A3C1B #2A7A1B

square

#1B597A #6C1B7A #7A3C1B #2A7A1B

split-complementary

#1B597A #7A1B2A #7A6C1B

monochromatic

#061219 #103448 #1B597A #267EAC #3C9FD4

Accessibility & contrast

On white

7.62

#1B597A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#1B597A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B597A

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B597A	#FFFFFF	#000000	##FFFFFF
##1B597A	1.00	7.62	2.76	7.62
#FFFFFF	7.62	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49597C

Deuteranopia (green-blind)

#3C5079

Tritanopia (blue-blind)

#006264

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1b597a;
/* rgb */ color: rgb(27, 89, 122);
/* oklch */ color: oklch(44.1% 0.082 236.5);

Tailwind

colors: {
  custom: {
    50: '#6687a0',
    500: '#1b597a',
    950: '#000000',
  },
}

SCSS

$custom: #1b597a;
$custom-light: #6687a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b597a",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 122
  },
  "hsl": {
    "h": 200.842,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.44103,
    "c": 0.08192,
    "h": 236.5
  },
  "luminance": 0.08783
}

Semantic roles & 50–950 ramp

primary

#1B597A

secondary

#AE6843

accent

#7B41E7

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070B0E

muted

#7A7C7E

Preview Lab

Preview with #1B597A

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

Preview Lab → · Contrast checker → · Palette generator →