#1B596E#1B596E

#1B596E is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.5% C 0.070 H 224.7°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#1B596E
RGB	rgb(27, 89, 110)
HSL	hsl(195, 61%, 27%)
HSV	hsv(195, 75%, 43%)
CMYK	cmyk(75.5%, 19.1%, 0%, 56.9%)
CIE-LAB	lab(35.01, -11.91, -17.66)
CIE-LCH	lch(35.01, 21.30, 235.99°)
OKLab	oklab(43.48% -0.0499 -0.0494)
OKLCH	oklch(43.48% 0.07 224.7)
XYZ	xyz(6.8377, 8.5028, 16.0297)
Luminance	0.0850 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B596E #6E301B

analogous

#1B6E5A #1B596E #1B306E

triadic

#1B596E #6E1B59 #596E1B

tetradic

#1B596E #5A1B6E #6E301B #306E1B

square

#1B596E #5A1B6E #6E301B #306E1B

split-complementary

#1B596E #6E1B30 #6E5A1B

monochromatic

#061419 #0F313D #1B596E #27819F #36A7CE

Accessibility & contrast

On white

7.78

#1B596E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1B596E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B596E

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B596E	#FFFFFF	#000000	##FFFFFF
##1B596E	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D576F

Deuteranopia (green-blind)

#424F6E

Tritanopia (blue-blind)

#005F60

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b596e;
/* rgb */ color: rgb(27, 89, 110);
/* oklch */ color: oklch(43.5% 0.070 224.7);

Tailwind

colors: {
  custom: {
    50: '#648897',
    500: '#1b596e',
    950: '#000000',
  },
}

SCSS

$custom: #1b596e;
$custom-light: #648897;
$custom-dark: #000000;

JSON

{
  "hex": "#1b596e",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 110
  },
  "hsl": {
    "h": 195.181,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.4348,
    "c": 0.07022,
    "h": 224.7
  },
  "luminance": 0.08504
}

Semantic roles & 50–950 ramp

primary

#1B596E

secondary

#A35A42

accent

#6C44E4

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #1B596E

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

Preview Lab → · Contrast checker → · Palette generator →