#172A50#172A50

#172A50 is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.1% C 0.074 H 262.7°. Best body text is #FFFFFF at 14.16:1 contrast (WCAG AA passes).

Color values

HEX	#172A50
RGB	rgb(23, 42, 80)
HSL	hsl(220, 55%, 20%)
HSV	hsv(220, 71%, 31%)
CMYK	cmyk(71.2%, 47.5%, 0%, 68.6%)
CIE-LAB	lab(17.54, 6.64, -25.65)
CIE-LCH	lch(17.54, 26.49, 284.52°)
OKLab	oklab(29.13% -0.0094 -0.0732)
OKLCH	oklch(29.13% 0.074 262.7)
XYZ	xyz(2.6288, 2.4170, 7.9159)
Luminance	0.0242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A50 #503D17

analogous

#174650 #172A50 #201750

triadic

#172A50 #50172A #2A5017

tetradic

#172A50 #501746 #503D17 #175020

square

#172A50 #501746 #503D17 #175020

split-complementary

#172A50 #502017 #465017

monochromatic

#070C18 #091120 #172A50 #254380 #325CAF

Accessibility & contrast

On white

14.16

#172A50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#172A50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A50

14.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A50	#FFFFFF	#000000	##FFFFFF
##172A50	1.00	14.16	1.48	14.16
#FFFFFF	14.16	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#182E51

Deuteranopia (green-blind)

#0F294F

Tritanopia (blue-blind)

#003339

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #172a50;
/* rgb */ color: rgb(23, 42, 80);
/* oklch */ color: oklch(29.1% 0.074 262.7);

Tailwind

colors: {
  custom: {
    50: '#5b6381',
    500: '#172a50',
    950: '#000000',
  },
}

SCSS

$custom: #172a50;
$custom-light: #5b6381;
$custom-dark: #000000;

JSON

{
  "hex": "#172a50",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 80
  },
  "hsl": {
    "h": 220,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.29131,
    "c": 0.07379,
    "h": 262.7
  },
  "luminance": 0.02417
}

Semantic roles & 50–950 ramp

primary

#172A50

secondary

#876E3C

accent

#AD49DF

background

#F5F5F7

surface

#E9EAEE

border

#C5C6C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #172A50

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

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