#10539D#10539D

#10539D is a dark, vivid cyan. Relative luminance 0.087; OKLCH L 44.6% C 0.136 H 255.1°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#10539D
RGB	rgb(16, 83, 157)
HSL	hsl(211, 82%, 34%)
HSV	hsv(211, 90%, 62%)
CMYK	cmyk(89.8%, 47.1%, 0%, 38.4%)
CIE-LAB	lab(35.46, 9.34, -45.73)
CIE-LCH	lch(35.46, 46.68, 281.54°)
OKLab	oklab(44.61% -0.035 -0.1315)
OKLCH	oklch(44.61% 0.136 255.1)
XYZ	xyz(9.3905, 8.7298, 33.0818)
Luminance	0.0873 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10539D #9D5A10

analogous

#109A9D #10539D #13109D

triadic

#10539D #9D1053 #539D10

tetradic

#10539D #9D109A #9D5A10 #109D13

square

#10539D #9D109A #9D5A10 #109D13

split-complementary

#10539D #9D1310 #9A9D10

monochromatic

#05182E #0A3665 #10539D #1670D5 #3C8FEB

Accessibility & contrast

On white

7.65

#10539D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#10539D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10539D

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10539D	#FFFFFF	#000000	##FFFFFF
##10539D	1.00	7.65	2.75	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5AA0

Deuteranopia (green-blind)

#004E9C

Tritanopia (blue-blind)

#006570

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #10539d;
/* rgb */ color: rgb(16, 83, 157);
/* oklch */ color: oklch(44.6% 0.136 255.1);

Tailwind

colors: {
  custom: {
    50: '#6c82ba',
    500: '#10539d',
    950: '#000000',
  },
}

SCSS

$custom: #10539d;
$custom-light: #6c82ba;
$custom-dark: #000000;

JSON

{
  "hex": "#10539d",
  "rgb": {
    "r": 16,
    "g": 83,
    "b": 157
  },
  "hsl": {
    "h": 211.489,
    "s": 81.503,
    "l": 33.922
  },
  "oklch": {
    "l": 0.4461,
    "c": 0.13606,
    "h": 255.1
  },
  "luminance": 0.08731
}

Semantic roles & 50–950 ramp

primary

#10539D

secondary

#CA883E

accent

#9930F8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #10539D

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

Preview Lab → · Contrast checker → · Palette generator →