#1B536D#1B536D

#1B536D is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 41.8% C 0.072 H 232.4°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B536D
RGB	rgb(27, 83, 109)
HSL	hsl(199, 60%, 27%)
HSV	hsv(199, 75%, 43%)
CMYK	cmyk(75.2%, 23.9%, 0%, 57.3%)
CIE-LAB	lab(32.97, -8.67, -20.19)
CIE-LCH	lch(32.97, 21.97, 246.75°)
OKLab	oklab(41.84% -0.0436 -0.0567)
OKLCH	oklch(41.84% 0.072 232.4)
XYZ	xyz(6.3045, 7.5229, 15.5848)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B536D #6D351B

analogous

#1B6D5E #1B536D #1B2A6D

triadic

#1B536D #6D1B53 #536D1B

tetradic

#1B536D #5E1B6D #6D351B #2A6D1B

square

#1B536D #5E1B6D #6D351B #2A6D1B

split-complementary

#1B536D #6D1B2A #6D5E1B

monochromatic

#061319 #0F2E3C #1B536D #27789E #359DCD

Accessibility & contrast

On white

8.38

#1B536D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1B536D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B536D

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B536D	#FFFFFF	#000000	##FFFFFF
##1B536D	1.00	8.38	2.50	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46526E

Deuteranopia (green-blind)

#3B4A6D

Tritanopia (blue-blind)

#005A5C

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b536d;
/* rgb */ color: rgb(27, 83, 109);
/* oklch */ color: oklch(41.8% 0.072 232.4);

Tailwind

colors: {
  custom: {
    50: '#648397',
    500: '#1b536d',
    950: '#000000',
  },
}

SCSS

$custom: #1b536d;
$custom-light: #648397;
$custom-dark: #000000;

JSON

{
  "hex": "#1b536d",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 109
  },
  "hsl": {
    "h": 199.024,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.41835,
    "c": 0.07158,
    "h": 232.4
  },
  "luminance": 0.07524
}

Semantic roles & 50–950 ramp

primary

#1B536D

secondary

#A26042

accent

#7744E3

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060A0D

muted

#7A7C7E

Preview Lab

Preview with #1B536D

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

Preview Lab → · Contrast checker → · Palette generator →