#173451#173451

#173451 is a dark, moderate cyan. Relative luminance 0.032; OKLCH L 31.8% C 0.063 H 250.4°. Best body text is #FFFFFF at 12.76:1 contrast (WCAG AA passes).

Color values

HEX	#173451
RGB	rgb(23, 52, 81)
HSL	hsl(210, 56%, 20%)
HSV	hsv(210, 72%, 32%)
CMYK	cmyk(71.6%, 35.8%, 0%, 68.2%)
CIE-LAB	lab(20.95, -0.10, -20.91)
CIE-LCH	lch(20.95, 20.91, 269.72°)
OKLab	oklab(31.81% -0.021 -0.0592)
OKLCH	oklch(31.81% 0.063 250.4)
XYZ	xyz(3.0660, 3.2319, 8.2452)
Luminance	0.0323 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173451 #513417

analogous

#175151 #173451 #171751

triadic

#173451 #511734 #345117

tetradic

#173451 #511751 #513417 #175117

square

#173451 #511751 #513417 #175117

split-complementary

#173451 #511717 #515117

monochromatic

#070F18 #091521 #173451 #255381 #3271B0

Accessibility & contrast

On white

12.76

#173451 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#173451 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173451

12.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173451	#FFFFFF	#000000	##FFFFFF
##173451	1.00	12.76	1.65	12.76
#FFFFFF	12.76	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273552

Deuteranopia (green-blind)

#1F3050

Tritanopia (blue-blind)

#003B3E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #173451;
/* rgb */ color: rgb(23, 52, 81);
/* oklch */ color: oklch(31.8% 0.063 250.4);

Tailwind

colors: {
  custom: {
    50: '#5b6b82',
    500: '#173451',
    950: '#000000',
  },
}

SCSS

$custom: #173451;
$custom-light: #5b6b82;
$custom-dark: #000000;

JSON

{
  "hex": "#173451",
  "rgb": {
    "r": 23,
    "g": 52,
    "b": 81
  },
  "hsl": {
    "h": 210,
    "s": 55.769,
    "l": 20.392
  },
  "oklch": {
    "l": 0.31805,
    "c": 0.06281,
    "h": 250.4
  },
  "luminance": 0.03232
}

Semantic roles & 50–950 ramp

primary

#173451

secondary

#88623C

accent

#9449DF

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04060A

muted

#797A7C

Preview Lab

Preview with #173451

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

Preview Lab → · Contrast checker → · Palette generator →