#172D50#172D50

#172D50 is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.9% C 0.070 H 259.3°. Best body text is #FFFFFF at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#172D50
RGB	rgb(23, 45, 80)
HSL	hsl(217, 55%, 20%)
HSV	hsv(217, 71%, 31%)
CMYK	cmyk(71.2%, 43.7%, 0%, 68.6%)
CIE-LAB	lab(18.53, 4.46, -24.07)
CIE-LCH	lch(18.53, 24.47, 280.49°)
OKLab	oklab(29.9% -0.0129 -0.0685)
OKLCH	oklch(29.9% 0.07 259.3)
XYZ	xyz(2.7392, 2.6379, 7.9527)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D50 #503A17

analogous

#174950 #172D50 #1D1750

triadic

#172D50 #50172D #2D5017

tetradic

#172D50 #501749 #503A17 #17501D

square

#172D50 #501749 #503A17 #17501D

split-complementary

#172D50 #501D17 #495017

monochromatic

#070D18 #091220 #172D50 #254880 #3262AF

Accessibility & contrast

On white

13.75

#172D50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#172D50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D50

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D50	#FFFFFF	#000000	##FFFFFF
##172D50	1.00	13.75	1.53	13.75
#FFFFFF	13.75	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D3051

Deuteranopia (green-blind)

#152B4F

Tritanopia (blue-blind)

#00353A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172d50;
/* rgb */ color: rgb(23, 45, 80);
/* oklch */ color: oklch(29.9% 0.070 259.3);

Tailwind

colors: {
  custom: {
    50: '#5b6581',
    500: '#172d50',
    950: '#000000',
  },
}

SCSS

$custom: #172d50;
$custom-light: #5b6581;
$custom-dark: #000000;

JSON

{
  "hex": "#172d50",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 80
  },
  "hsl": {
    "h": 216.842,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.29898,
    "c": 0.06972,
    "h": 259.3
  },
  "luminance": 0.02638
}

Semantic roles & 50–950 ramp

primary

#172D50

secondary

#876A3C

accent

#A549DF

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #172D50

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

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