#172C5F#172C5F

#172C5F is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.8% C 0.095 H 264.6°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#172C5F
RGB	rgb(23, 44, 95)
HSL	hsl(223, 61%, 23%)
HSV	hsv(223, 76%, 37%)
CMYK	cmyk(75.8%, 53.7%, 0%, 62.7%)
CIE-LAB	lab(19.26, 11.43, -32.89)
CIE-LCH	lch(19.26, 34.81, 289.16°)
OKLab	oklab(30.8% -0.0089 -0.0945)
OKLCH	oklch(30.8% 0.095 264.6)
XYZ	xyz(3.3189, 2.8094, 11.1916)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C5F #5F4A17

analogous

#17505F #172C5F #26175F

triadic

#172C5F #5F172C #2C5F17

tetradic

#172C5F #5F1750 #5F4A17 #175F26

square

#172C5F #5F1750 #5F4A17 #175F26

split-complementary

#172C5F #5F2617 #505F17

monochromatic

#060B19 #0B152E #172C5F #234390 #2F5AC2

Accessibility & contrast

On white

13.44

#172C5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#172C5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C5F

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C5F	#FFFFFF	#000000	##FFFFFF
##172C5F	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E3261

Deuteranopia (green-blind)

#002C5E

Tritanopia (blue-blind)

#003841

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172c5f;
/* rgb */ color: rgb(23, 44, 95);
/* oklch */ color: oklch(30.8% 0.095 264.6);

Tailwind

colors: {
  custom: {
    50: '#5f648d',
    500: '#172c5f',
    950: '#000000',
  },
}

SCSS

$custom: #172c5f;
$custom-light: #5f648d;
$custom-dark: #000000;

JSON

{
  "hex": "#172c5f",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 95
  },
  "hsl": {
    "h": 222.5,
    "s": 61.017,
    "l": 23.137
  },
  "oklch": {
    "l": 0.30801,
    "c": 0.09487,
    "h": 264.6
  },
  "luminance": 0.0281
}

Semantic roles & 50–950 ramp

primary

#172C5F

secondary

#967C3C

accent

#B544E4

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #172C5F

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

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