#172F56#172F56

#172F56 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 30.8% C 0.077 H 259.6°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#172F56
RGB	rgb(23, 47, 86)
HSL	hsl(217, 58%, 21%)
HSV	hsv(217, 73%, 34%)
CMYK	cmyk(73.3%, 45.3%, 0%, 66.3%)
CIE-LAB	lab(19.58, 5.49, -26.41)
CIE-LCH	lch(19.58, 26.97, 281.74°)
OKLab	oklab(30.84% -0.0138 -0.0753)
OKLCH	oklch(30.84% 0.077 259.6)
XYZ	xyz(3.0490, 2.8868, 9.1988)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F56 #563E17

analogous

#174F56 #172F56 #1F1756

triadic

#172F56 #56172F #2F5617

tetradic

#172F56 #56174F #563E17 #17561F

square

#172F56 #56174F #563E17 #17561F

split-complementary

#172F56 #561F17 #4F5617

monochromatic

#060D18 #0A1526 #172F56 #244986 #3164B7

Accessibility & contrast

On white

13.31

#172F56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#172F56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F56

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F56	#FFFFFF	#000000	##FFFFFF
##172F56	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D3358

Deuteranopia (green-blind)

#132D55

Tritanopia (blue-blind)

#00383E

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172f56;
/* rgb */ color: rgb(23, 47, 86);
/* oklch */ color: oklch(30.8% 0.077 259.6);

Tailwind

colors: {
  custom: {
    50: '#5c6786',
    500: '#172f56',
    950: '#000000',
  },
}

SCSS

$custom: #172f56;
$custom-light: #5c6786;
$custom-dark: #000000;

JSON

{
  "hex": "#172f56",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 86
  },
  "hsl": {
    "h": 217.143,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30841,
    "c": 0.07659,
    "h": 259.6
  },
  "luminance": 0.02887
}

Semantic roles & 50–950 ramp

primary

#172F56

secondary

#8D6E3C

accent

#A647E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #172F56

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

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