#1B539D#1B539D

#1B539D is a dark, vivid cyan. Relative luminance 0.089; OKLCH L 44.9% C 0.134 H 257.1°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B539D
RGB	rgb(27, 83, 157)
HSL	hsl(214, 71%, 36%)
HSV	hsv(214, 83%, 62%)
CMYK	cmyk(82.8%, 47.1%, 0%, 38.4%)
CIE-LAB	lab(35.70, 10.24, -45.33)
CIE-LCH	lch(35.70, 46.48, 282.73°)
OKLab	oklab(44.87% -0.0299 -0.1302)
OKLCH	oklch(44.87% 0.134 257.1)
XYZ	xyz(9.6288, 8.8527, 33.0930)
Luminance	0.0885 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B539D #9D651B

analogous

#1B949D #1B539D #241B9D

triadic

#1B539D #9D1B53 #539D1B

tetradic

#1B539D #9D1B94 #9D651B #1B9D24

square

#1B539D #9D1B94 #9D651B #1B9D24

split-complementary

#1B539D #9D241B #949D1B

monochromatic

#091C35 #123769 #1B539D #246FD1 #518FE1

Accessibility & contrast

On white

7.58

#1B539D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#1B539D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B539D

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B539D	#FFFFFF	#000000	##FFFFFF
##1B539D	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5AA0

Deuteranopia (green-blind)

#054F9C

Tritanopia (blue-blind)

#006570

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1b539d;
/* rgb */ color: rgb(27, 83, 157);
/* oklch */ color: oklch(44.9% 0.134 257.1);

Tailwind

colors: {
  custom: {
    50: '#6e82ba',
    500: '#1b539d',
    950: '#000000',
  },
}

SCSS

$custom: #1b539d;
$custom-light: #6e82ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1b539d",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 157
  },
  "hsl": {
    "h": 214.154,
    "s": 70.652,
    "l": 36.078
  },
  "oklch": {
    "l": 0.44865,
    "c": 0.13361,
    "h": 257.1
  },
  "luminance": 0.08854
}

Semantic roles & 50–950 ramp

primary

#1B539D

secondary

#C49250

accent

#A03AED

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #1B539D

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

Preview Lab → · Contrast checker → · Palette generator →