#173B4D#173B4D

#173B4D is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.5% C 0.052 H 233.1°. Best body text is #FFFFFF at 11.87:1 contrast (WCAG AA passes).

Color values

HEX	#173B4D
RGB	rgb(23, 59, 77)
HSL	hsl(200, 54%, 20%)
HSV	hsv(200, 70%, 30%)
CMYK	cmyk(70.1%, 23.4%, 0%, 69.8%)
CIE-LAB	lab(23.15, -6.38, -14.80)
CIE-LCH	lch(23.15, 16.12, 246.70°)
OKLab	oklab(33.48% -0.0312 -0.0415)
OKLCH	oklch(33.48% 0.052 233.1)
XYZ	xyz(3.2563, 3.8456, 7.5904)
Luminance	0.0385 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B4D #4D2917

analogous

#174D44 #173B4D #17204D

triadic

#173B4D #4D173B #3B4D17

tetradic

#173B4D #44174D #4D2917 #204D17

square

#173B4D #44174D #4D2917 #204D17

split-complementary

#173B4D #4D1720 #4D4417

monochromatic

#071218 #09171E #173B4D #255F7C #3383AB

Accessibility & contrast

On white

11.87

#173B4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#173B4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B4D

11.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B4D	#FFFFFF	#000000	##FFFFFF
##173B4D	1.00	11.87	1.77	11.87
#FFFFFF	11.87	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323A4E

Deuteranopia (green-blind)

#2B354D

Tritanopia (blue-blind)

#004041

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173b4d;
/* rgb */ color: rgb(23, 59, 77);
/* oklch */ color: oklch(33.5% 0.052 233.1);

Tailwind

colors: {
  custom: {
    50: '#5b707e',
    500: '#173b4d',
    950: '#000000',
  },
}

SCSS

$custom: #173b4d;
$custom-light: #5b707e;
$custom-dark: #000000;

JSON

{
  "hex": "#173b4d",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 77
  },
  "hsl": {
    "h": 200,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.33479,
    "c": 0.05188,
    "h": 233.1
  },
  "luminance": 0.03846
}

Semantic roles & 50–950 ramp

primary

#173B4D

secondary

#84543C

accent

#7B4ADD

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #173B4D

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

Preview Lab → · Contrast checker → · Palette generator →