#172E50#172E50

#172E50 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.2% C 0.068 H 258.1°. Best body text is #FFFFFF at 13.61:1 contrast (WCAG AA passes).

Color values

HEX	#172E50
RGB	rgb(23, 46, 80)
HSL	hsl(216, 55%, 20%)
HSV	hsv(216, 71%, 31%)
CMYK	cmyk(71.2%, 42.5%, 0%, 68.6%)
CIE-LAB	lab(18.86, 3.73, -23.53)
CIE-LCH	lch(18.86, 23.83, 279.02°)
OKLab	oklab(30.16% -0.0141 -0.0669)
OKLCH	oklch(30.16% 0.068 258.1)
XYZ	xyz(2.7778, 2.7151, 7.9655)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E50 #503917

analogous

#174B50 #172E50 #1C1750

triadic

#172E50 #50172E #2E5017

tetradic

#172E50 #50174B #503917 #17501C

square

#172E50 #50174B #503917 #17501C

split-complementary

#172E50 #501C17 #4B5017

monochromatic

#070E18 #091320 #172E50 #254980 #3265AF

Accessibility & contrast

On white

13.61

#172E50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#172E50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E50

13.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E50	#FFFFFF	#000000	##FFFFFF
##172E50	1.00	13.61	1.54	13.61
#FFFFFF	13.61	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3151

Deuteranopia (green-blind)

#172B4F

Tritanopia (blue-blind)

#00363B

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172e50;
/* rgb */ color: rgb(23, 46, 80);
/* oklch */ color: oklch(30.2% 0.068 258.1);

Tailwind

colors: {
  custom: {
    50: '#5b6681',
    500: '#172e50',
    950: '#000000',
  },
}

SCSS

$custom: #172e50;
$custom-light: #5b6681;
$custom-dark: #000000;

JSON

{
  "hex": "#172e50",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 80
  },
  "hsl": {
    "h": 215.789,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.30157,
    "c": 0.06842,
    "h": 258.1
  },
  "luminance": 0.02715
}

Semantic roles & 50–950 ramp

primary

#172E50

secondary

#87693C

accent

#A249DF

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #172E50

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

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