#17539D#17539D

#17539D is a dark, vivid cyan. Relative luminance 0.088; OKLCH L 44.8% C 0.135 H 256.2°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#17539D
RGB	rgb(23, 83, 157)
HSL	hsl(213, 74%, 35%)
HSV	hsv(213, 85%, 62%)
CMYK	cmyk(85.4%, 47.1%, 0%, 38.4%)
CIE-LAB	lab(35.60, 9.87, -45.50)
CIE-LCH	lch(35.60, 46.56, 282.24°)
OKLab	oklab(44.76% -0.032 -0.1307)
OKLCH	oklch(44.76% 0.135 256.2)
XYZ	xyz(9.5301, 8.8018, 33.0884)
Luminance	0.0880 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17539D #9D6117

analogous

#17969D #17539D #1E179D

triadic

#17539D #9D1753 #539D17

tetradic

#17539D #9D1796 #9D6117 #179D1E

square

#17539D #9D1796 #9D6117 #179D1E

split-complementary

#17539D #9D1E17 #969D17

monochromatic

#071B32 #0F3768 #17539D #1F6FD2 #4A8FE4

Accessibility & contrast

On white

7.61

#17539D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#17539D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17539D

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17539D	#FFFFFF	#000000	##FFFFFF
##17539D	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5AA0

Deuteranopia (green-blind)

#024E9C

Tritanopia (blue-blind)

#006570

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #17539d;
/* rgb */ color: rgb(23, 83, 157);
/* oklch */ color: oklch(44.8% 0.135 256.2);

Tailwind

colors: {
  custom: {
    50: '#6d82ba',
    500: '#17539d',
    950: '#000000',
  },
}

SCSS

$custom: #17539d;
$custom-light: #6d82ba;
$custom-dark: #000000;

JSON

{
  "hex": "#17539d",
  "rgb": {
    "r": 23,
    "g": 83,
    "b": 157
  },
  "hsl": {
    "h": 213.134,
    "s": 74.444,
    "l": 35.294
  },
  "oklch": {
    "l": 0.4476,
    "c": 0.1346,
    "h": 256.2
  },
  "luminance": 0.08803
}

Semantic roles & 50–950 ramp

primary

#17539D

secondary

#C68E4A

accent

#9E37F1

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #17539D

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

Preview Lab → · Contrast checker → · Palette generator →