#1B539E#1B539E

#1B539E is a dark, vivid cyan. Relative luminance 0.089; OKLCH L 44.9% C 0.135 H 257.3°. Best body text is #FFFFFF at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#1B539E
RGB	rgb(27, 83, 158)
HSL	hsl(214, 71%, 36%)
HSV	hsv(214, 83%, 62%)
CMYK	cmyk(82.9%, 47.5%, 0%, 38%)
CIE-LAB	lab(35.77, 10.65, -45.83)
CIE-LCH	lch(35.77, 47.05, 283.08°)
OKLab	oklab(44.94% -0.0298 -0.1317)
OKLCH	oklch(44.94% 0.135 257.3)
XYZ	xyz(9.7145, 8.8870, 33.5445)
Luminance	0.0889 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B539E #9E661B

analogous

#1B959E #1B539E #251B9E

triadic

#1B539E #9E1B53 #539E1B

tetradic

#1B539E #9E1B95 #9E661B #1B9E25

square

#1B539E #9E1B95 #9E661B #1B9E25

split-complementary

#1B539E #9E251B #959E1B

monochromatic

#091C35 #12386A #1B539E #246ED2 #528FE1

Accessibility & contrast

On white

7.56

#1B539E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#1B539E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B539E

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B539E	#FFFFFF	#000000	##FFFFFF
##1B539E	1.00	7.56	2.78	7.56
#FFFFFF	7.56	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5AA1

Deuteranopia (green-blind)

#024F9D

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1b539e;
/* rgb */ color: rgb(27, 83, 158);
/* oklch */ color: oklch(44.9% 0.135 257.3);

Tailwind

colors: {
  custom: {
    50: '#6e82bb',
    500: '#1b539e',
    950: '#000000',
  },
}

SCSS

$custom: #1b539e;
$custom-light: #6e82bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b539e",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 158
  },
  "hsl": {
    "h": 214.351,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.44938,
    "c": 0.13498,
    "h": 257.3
  },
  "luminance": 0.08888
}

Semantic roles & 50–950 ramp

primary

#1B539E

secondary

#C49351

accent

#A13AEE

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #1B539E

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

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