#173155#173155

#173155 is a dark, moderate cyan. Relative luminance 0.030; OKLCH L 31.3% C 0.072 H 257.0°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#173155
RGB	rgb(23, 49, 85)
HSL	hsl(215, 57%, 21%)
HSV	hsv(215, 73%, 33%)
CMYK	cmyk(72.9%, 42.4%, 0%, 66.7%)
CIE-LAB	lab(20.18, 3.64, -24.79)
CIE-LCH	lch(20.18, 25.06, 278.36°)
OKLab	oklab(31.28% -0.0163 -0.0706)
OKLCH	oklch(31.28% 0.072 257)
XYZ	xyz(3.0908, 3.0343, 9.0154)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173155 #553B17

analogous

#175055 #173155 #1C1755

triadic

#173155 #551731 #315517

tetradic

#173155 #551750 #553B17 #17551C

square

#173155 #551750 #553B17 #17551C

split-complementary

#173155 #551C17 #505517

monochromatic

#070E18 #0A1525 #173155 #244D85 #3169B5

Accessibility & contrast

On white

13.07

#173155 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#173155 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173155

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173155	#FFFFFF	#000000	##FFFFFF
##173155	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#213456

Deuteranopia (green-blind)

#182E54

Tritanopia (blue-blind)

#00393E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #173155;
/* rgb */ color: rgb(23, 49, 85);
/* oklch */ color: oklch(31.3% 0.072 257.0);

Tailwind

colors: {
  custom: {
    50: '#5c6885',
    500: '#173155',
    950: '#000000',
  },
}

SCSS

$custom: #173155;
$custom-light: #5c6885;
$custom-dark: #000000;

JSON

{
  "hex": "#173155",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 85
  },
  "hsl": {
    "h": 214.839,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.31283,
    "c": 0.07243,
    "h": 257
  },
  "luminance": 0.03035
}

Semantic roles & 50–950 ramp

primary

#173155

secondary

#8C6A3C

accent

#A047E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #173155

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

Preview Lab → · Contrast checker → · Palette generator →