#172D59#172D59

#172D59 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.6% C 0.084 H 262.5°. Best body text is #FFFFFF at 13.50:1 contrast (WCAG AA passes).

Color values

HEX	#172D59
RGB	rgb(23, 45, 89)
HSL	hsl(220, 59%, 22%)
HSV	hsv(220, 74%, 35%)
CMYK	cmyk(74.2%, 49.4%, 0%, 65.1%)
CIE-LAB	lab(19.14, 8.19, -29.11)
CIE-LCH	lch(19.14, 30.24, 285.71°)
OKLab	oklab(30.57% -0.0109 -0.0833)
OKLCH	oklch(30.57% 0.084 262.5)
XYZ	xyz(3.0943, 2.7799, 9.8228)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D59 #594317

analogous

#174E59 #172D59 #221759

triadic

#172D59 #59172D #2D5917

tetradic

#172D59 #59174E #594317 #175922

square

#172D59 #59174E #594317 #175922

split-complementary

#172D59 #592217 #4E5917

monochromatic

#060C18 #0A1428 #172D59 #24468A #305EBA

Accessibility & contrast

On white

13.50

#172D59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#172D59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D59

13.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D59	#FFFFFF	#000000	##FFFFFF
##172D59	1.00	13.50	1.56	13.50
#FFFFFF	13.50	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17325B

Deuteranopia (green-blind)

#0A2C58

Tritanopia (blue-blind)

#00373E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172d59;
/* rgb */ color: rgb(23, 45, 89);
/* oklch */ color: oklch(30.6% 0.084 262.5);

Tailwind

colors: {
  custom: {
    50: '#5d6588',
    500: '#172d59',
    950: '#000000',
  },
}

SCSS

$custom: #172d59;
$custom-light: #5d6588;
$custom-dark: #000000;

JSON

{
  "hex": "#172d59",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 89
  },
  "hsl": {
    "h": 220,
    "s": 58.929,
    "l": 21.961
  },
  "oklch": {
    "l": 0.30565,
    "c": 0.08404,
    "h": 262.5
  },
  "luminance": 0.0278
}

Semantic roles & 50–950 ramp

primary

#172D59

secondary

#90743C

accent

#AE46E2

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05050B

muted

#797A7C

Preview Lab

Preview with #172D59

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

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