#173958#173958

#173958 is a dark, moderate cyan. Relative luminance 0.038; OKLCH L 33.6% C 0.068 H 248.7°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#173958
RGB	rgb(23, 57, 88)
HSL	hsl(209, 59%, 22%)
HSV	hsv(209, 74%, 35%)
CMYK	cmyk(73.9%, 35.2%, 0%, 65.5%)
CIE-LAB	lab(23.04, -0.72, -22.25)
CIE-LCH	lch(23.04, 22.26, 268.14°)
OKLab	oklab(33.58% -0.0246 -0.063)
OKLCH	oklch(33.58% 0.068 248.7)
XYZ	xyz(3.5773, 3.8126, 9.7780)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173958 #583617

analogous

#175857 #173958 #171958

triadic

#173958 #581739 #395817

tetradic

#173958 #571758 #583617 #195817

square

#173958 #571758 #583617 #195817

split-complementary

#173958 #581719 #585717

monochromatic

#061018 #0A1A27 #173958 #245889 #3078B9

Accessibility & contrast

On white

11.91

#173958 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#173958 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173958

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173958	#FFFFFF	#000000	##FFFFFF
##173958	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3A59

Deuteranopia (green-blind)

#223457

Tritanopia (blue-blind)

#004044

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173958;
/* rgb */ color: rgb(23, 57, 88);
/* oklch */ color: oklch(33.6% 0.068 248.7);

Tailwind

colors: {
  custom: {
    50: '#5d6f87',
    500: '#173958',
    950: '#000000',
  },
}

SCSS

$custom: #173958;
$custom-light: #5d6f87;
$custom-dark: #000000;

JSON

{
  "hex": "#173958",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 88
  },
  "hsl": {
    "h": 208.615,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.33579,
    "c": 0.06766,
    "h": 248.7
  },
  "luminance": 0.03813
}

Semantic roles & 50–950 ramp

primary

#173958

secondary

#8F633C

accent

#9046E2

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #173958

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

Preview Lab → · Contrast checker → · Palette generator →