#1B536C#1B536C

#1B536C is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 41.8% C 0.071 H 231.4°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B536C
RGB	rgb(27, 83, 108)
HSL	hsl(199, 60%, 26%)
HSV	hsv(199, 75%, 42%)
CMYK	cmyk(75%, 23.1%, 0%, 57.6%)
CIE-LAB	lab(32.92, -9.05, -19.64)
CIE-LCH	lch(32.92, 21.62, 245.26°)
OKLab	oklab(41.78% -0.044 -0.0551)
OKLCH	oklch(41.78% 0.071 231.4)
XYZ	xyz(6.2509, 7.5015, 15.3029)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B536C #6C341B

analogous

#1B6C5D #1B536C #1B2B6C

triadic

#1B536C #6C1B53 #536C1B

tetradic

#1B536C #5D1B6C #6C341B #2B6C1B

square

#1B536C #5D1B6C #6C341B #2B6C1B

split-complementary

#1B536C #6C1B2B #6C5D1B

monochromatic

#061318 #0F2D3B #1B536C #27799D #359ECC

Accessibility & contrast

On white

8.40

#1B536C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1B536C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B536C

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B536C	#FFFFFF	#000000	##FFFFFF
##1B536C	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46526D

Deuteranopia (green-blind)

#3B4A6C

Tritanopia (blue-blind)

#005A5B

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b536c;
/* rgb */ color: rgb(27, 83, 108);
/* oklch */ color: oklch(41.8% 0.071 231.4);

Tailwind

colors: {
  custom: {
    50: '#638396',
    500: '#1b536c',
    950: '#000000',
  },
}

SCSS

$custom: #1b536c;
$custom-light: #638396;
$custom-dark: #000000;

JSON

{
  "hex": "#1b536c",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 108
  },
  "hsl": {
    "h": 198.519,
    "s": 60,
    "l": 26.471
  },
  "oklch": {
    "l": 0.41783,
    "c": 0.07057,
    "h": 231.4
  },
  "luminance": 0.07502
}

Semantic roles & 50–950 ramp

primary

#1B536C

secondary

#A15F42

accent

#7645E3

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060A0D

muted

#7A7C7E

Preview Lab

Preview with #1B536C

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

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