#172E56#172E56

#172E56 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.6% C 0.078 H 260.7°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#172E56
RGB	rgb(23, 46, 86)
HSL	hsl(218, 58%, 21%)
HSV	hsv(218, 73%, 34%)
CMYK	cmyk(73.3%, 46.5%, 0%, 66.3%)
CIE-LAB	lab(19.26, 6.21, -26.93)
CIE-LCH	lch(19.26, 27.64, 282.99°)
OKLab	oklab(30.59% -0.0126 -0.0769)
OKLCH	oklch(30.59% 0.078 260.7)
XYZ	xyz(3.0095, 2.8077, 9.1856)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E56 #563F17

analogous

#174E56 #172E56 #201756

triadic

#172E56 #56172E #2E5617

tetradic

#172E56 #56174E #563F17 #175620

square

#172E56 #56174E #563F17 #175620

split-complementary

#172E56 #562017 #4E5617

monochromatic

#060D18 #0A1426 #172E56 #244886 #3162B7

Accessibility & contrast

On white

13.45

#172E56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#172E56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E56

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E56	#FFFFFF	#000000	##FFFFFF
##172E56	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3258

Deuteranopia (green-blind)

#112C55

Tritanopia (blue-blind)

#00373D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172e56;
/* rgb */ color: rgb(23, 46, 86);
/* oklch */ color: oklch(30.6% 0.078 260.7);

Tailwind

colors: {
  custom: {
    50: '#5c6686',
    500: '#172e56',
    950: '#000000',
  },
}

SCSS

$custom: #172e56;
$custom-light: #5c6686;
$custom-dark: #000000;

JSON

{
  "hex": "#172e56",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 86
  },
  "hsl": {
    "h": 218.095,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30588,
    "c": 0.07792,
    "h": 260.7
  },
  "luminance": 0.02808
}

Semantic roles & 50–950 ramp

primary

#172E56

secondary

#8D6F3C

accent

#A947E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04050B

muted

#797A7C

Preview Lab

Preview with #172E56

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

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