#172E85#172E85

#172E85 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.7% C 0.148 H 266.6°. Best body text is #FFFFFF at 11.89:1 contrast (WCAG AA passes).

Color values

HEX	#172E85
RGB	rgb(23, 46, 133)
HSL	hsl(227, 71%, 31%)
HSV	hsv(227, 83%, 52%)
CMYK	cmyk(82.7%, 65.4%, 0%, 47.8%)
CIE-LAB	lab(23.10, 25.60, -51.06)
CIE-LCH	lch(23.10, 57.12, 296.63°)
OKLab	oklab(34.69% -0.0087 -0.1478)
OKLCH	oklch(34.69% 0.148 266.6)
XYZ	xyz(5.5625, 3.8289, 22.6316)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E85 #856E17

analogous

#176585 #172E85 #371785

triadic

#172E85 #85172E #2E8517

tetradic

#172E85 #851765 #856E17 #178537

square

#172E85 #851765 #856E17 #178537

split-complementary

#172E85 #853717 #658517

monochromatic

#050A1D #0E1C51 #172E85 #2040B9 #3A5CDD

Accessibility & contrast

On white

11.89

#172E85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#172E85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E85

11.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E85	#FFFFFF	#000000	##FFFFFF
##172E85	1.00	11.89	1.77	11.89
#FFFFFF	11.89	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C88

Deuteranopia (green-blind)

#003283

Tritanopia (blue-blind)

#004555

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #172e85;
/* rgb */ color: rgb(23, 46, 133);
/* oklch */ color: oklch(34.7% 0.148 266.6);

Tailwind

colors: {
  custom: {
    50: '#6966a9',
    500: '#172e85',
    950: '#000000',
  },
}

SCSS

$custom: #172e85;
$custom-light: #6966a9;
$custom-dark: #000000;

JSON

{
  "hex": "#172e85",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 133
  },
  "hsl": {
    "h": 227.455,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.34692,
    "c": 0.14804,
    "h": 266.6
  },
  "luminance": 0.0383
}

Semantic roles & 50–950 ramp

primary

#172E85

secondary

#B99F3F

accent

#C83BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #172E85

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

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