#00172C#00172C

#00172C is a very dark, muted cyan. Relative luminance 0.008; OKLCH L 19.9% C 0.052 H 247.1°. Best body text is #FFFFFF at 18.12:1 contrast (WCAG AA passes).

Color values

HEX	#00172C
RGB	rgb(0, 23, 44)
HSL	hsl(209, 100%, 9%)
HSV	hsv(209, 100%, 17%)
CMYK	cmyk(100%, 47.7%, 0%, 82.7%)
CIE-LAB	lab(7.18, 0.23, -16.85)
CIE-LCH	lch(7.18, 16.85, 270.79°)
OKLab	oklab(19.91% -0.0204 -0.0484)
OKLCH	oklch(19.91% 0.053 247.1)
XYZ	xyz(0.7608, 0.7945, 2.4956)
Luminance	0.0080 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00172C #2C1500

analogous

#002C2B #00172C #00012C

triadic

#00172C #2C0017 #172C00

tetradic

#00172C #2B002C #2C1500 #012C00

square

#00172C #2B002C #2C1500 #012C00

split-complementary

#00172C #2C0001 #2C2B00

monochromatic

#00101F #00101F #00172C #003769 #0057A6

Accessibility & contrast

On white

18.12

#00172C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#00172C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00172C

18.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00172C	#FFFFFF	#000000	##FFFFFF
##00172C	1.00	18.12	1.16	18.12
#FFFFFF	18.12	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D182D

Deuteranopia (green-blind)

#05142C

Tritanopia (blue-blind)

#001C1F

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #00172c;
/* rgb */ color: rgb(0, 23, 44);
/* oklch */ color: oklch(19.9% 0.052 247.1);

Tailwind

colors: {
  custom: {
    50: '#485365',
    500: '#00172c',
    950: '#000000',
  },
}

SCSS

$custom: #00172c;
$custom-light: #485365;
$custom-dark: #000000;

JSON

{
  "hex": "#00172c",
  "rgb": {
    "r": 0,
    "g": 23,
    "b": 44
  },
  "hsl": {
    "h": 208.636,
    "s": 100,
    "l": 8.627
  },
  "oklch": {
    "l": 0.19914,
    "c": 0.0525,
    "h": 247.1
  },
  "luminance": 0.00795
}

Semantic roles & 50–950 ramp

primary

#00172C

secondary

#734214

accent

#8F29FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #00172C

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

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