#172E59#172E59

#172E59 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 30.8% C 0.083 H 261.7°. Best body text is #FFFFFF at 13.36:1 contrast (WCAG AA passes).

Color values

HEX	#172E59
RGB	rgb(23, 46, 89)
HSL	hsl(219, 59%, 22%)
HSV	hsv(219, 74%, 35%)
CMYK	cmyk(74.2%, 48.3%, 0%, 65.1%)
CIE-LAB	lab(19.46, 7.46, -28.60)
CIE-LCH	lch(19.46, 29.55, 284.62°)
OKLab	oklab(30.81% -0.012 -0.0818)
OKLCH	oklch(30.81% 0.083 261.7)
XYZ	xyz(3.1329, 2.8571, 9.8356)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E59 #594217

analogous

#174F59 #172E59 #211759

triadic

#172E59 #59172E #2E5917

tetradic

#172E59 #59174F #594217 #175921

square

#172E59 #59174F #594217 #175921

split-complementary

#172E59 #592117 #4F5917

monochromatic

#060D18 #0A1528 #172E59 #24478A #3060BA

Accessibility & contrast

On white

13.36

#172E59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#172E59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E59

13.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E59	#FFFFFF	#000000	##FFFFFF
##172E59	1.00	13.36	1.57	13.36
#FFFFFF	13.36	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19325B

Deuteranopia (green-blind)

#0D2C58

Tritanopia (blue-blind)

#00383F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172e59;
/* rgb */ color: rgb(23, 46, 89);
/* oklch */ color: oklch(30.8% 0.083 261.7);

Tailwind

colors: {
  custom: {
    50: '#5d6688',
    500: '#172e59',
    950: '#000000',
  },
}

SCSS

$custom: #172e59;
$custom-light: #5d6688;
$custom-dark: #000000;

JSON

{
  "hex": "#172e59",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 89
  },
  "hsl": {
    "h": 219.091,
    "s": 58.929,
    "l": 21.961
  },
  "oklch": {
    "l": 0.30813,
    "c": 0.08267,
    "h": 261.7
  },
  "luminance": 0.02857
}

Semantic roles & 50–950 ramp

primary

#172E59

secondary

#90733C

accent

#AC46E2

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05050B

muted

#797A7C

Preview Lab

Preview with #172E59

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

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