#172E4F#172E4F

#172E4F is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.1% C 0.067 H 257.6°. Best body text is #FFFFFF at 13.63:1 contrast (WCAG AA passes).

Color values

HEX	#172E4F
RGB	rgb(23, 46, 79)
HSL	hsl(215, 55%, 20%)
HSV	hsv(215, 71%, 31%)
CMYK	cmyk(70.9%, 41.8%, 0%, 69%)
CIE-LAB	lab(18.80, 3.32, -22.96)
CIE-LCH	lch(18.80, 23.20, 278.24°)
OKLab	oklab(30.09% -0.0144 -0.0653)
OKLCH	oklch(30.09% 0.067 257.6)
XYZ	xyz(2.7411, 2.7004, 7.7724)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E4F #4F3817

analogous

#174A4F #172E4F #1C174F

triadic

#172E4F #4F172E #2E4F17

tetradic

#172E4F #4F174A #4F3817 #174F1C

square

#172E4F #4F174A #4F3817 #174F1C

split-complementary

#172E4F #4F1C17 #4A4F17

monochromatic

#070E18 #091220 #172E4F #254A7E #3365AE

Accessibility & contrast

On white

13.63

#172E4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#172E4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E4F

13.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E4F	#FFFFFF	#000000	##FFFFFF
##172E4F	1.00	13.63	1.54	13.63
#FFFFFF	13.63	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3150

Deuteranopia (green-blind)

#172B4E

Tritanopia (blue-blind)

#00363A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172e4f;
/* rgb */ color: rgb(23, 46, 79);
/* oklch */ color: oklch(30.1% 0.067 257.6);

Tailwind

colors: {
  custom: {
    50: '#5b6680',
    500: '#172e4f',
    950: '#000000',
  },
}

SCSS

$custom: #172e4f;
$custom-light: #5b6680;
$custom-dark: #000000;

JSON

{
  "hex": "#172e4f",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 79
  },
  "hsl": {
    "h": 215.357,
    "s": 54.902,
    "l": 20
  },
  "oklch": {
    "l": 0.30087,
    "c": 0.06683,
    "h": 257.6
  },
  "luminance": 0.02701
}

Semantic roles & 50–950 ramp

primary

#172E4F

secondary

#86683C

accent

#A14ADE

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #172E4F

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

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