#1C539F#1C539F

#1C539F is a mid, vivid cyan. Relative luminance 0.089; OKLCH L 45.0% C 0.136 H 257.7°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#1C539F
RGB	rgb(28, 83, 159)
HSL	hsl(215, 70%, 37%)
HSV	hsv(215, 82%, 62%)
CMYK	cmyk(82.4%, 47.8%, 0%, 37.6%)
CIE-LAB	lab(35.86, 11.15, -46.27)
CIE-LCH	lch(35.86, 47.60, 283.54°)
OKLab	oklab(45.04% -0.029 -0.133)
OKLCH	oklch(45.04% 0.136 257.7)
XYZ	xyz(9.8278, 8.9354, 34.0009)
Luminance	0.0894 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C539F #9F681C

analogous

#1C959F #1C539F #271C9F

triadic

#1C539F #9F1C53 #539F1C

tetradic

#1C539F #9F1C95 #9F681C #1C9F27

square

#1C539F #9F1C95 #9F681C #1C9F27

split-complementary

#1C539F #9F271C #959F1C

monochromatic

#0A1D37 #13386B #1C539F #256ED3 #548FE1

Accessibility & contrast

On white

7.53

#1C539F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#1C539F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C539F

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C539F	#FFFFFF	#000000	##FFFFFF
##1C539F	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#295BA2

Deuteranopia (green-blind)

#004F9D

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1c539f;
/* rgb */ color: rgb(28, 83, 159);
/* oklch */ color: oklch(45.0% 0.136 257.7);

Tailwind

colors: {
  custom: {
    50: '#6f82bc',
    500: '#1c539f',
    950: '#000000',
  },
}

SCSS

$custom: #1c539f;
$custom-light: #6f82bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c539f",
  "rgb": {
    "r": 28,
    "g": 83,
    "b": 159
  },
  "hsl": {
    "h": 214.809,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.45039,
    "c": 0.1361,
    "h": 257.7
  },
  "luminance": 0.08937
}

Semantic roles & 50–950 ramp

primary

#1C539F

secondary

#C49453

accent

#A23BED

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1C539F

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

Preview Lab → · Contrast checker → · Palette generator →