#172D74#172D74

#172D74 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.9% C 0.125 H 266.3°. Best body text is #FFFFFF at 12.62:1 contrast (WCAG AA passes).

Color values

HEX	#172D74
RGB	rgb(23, 45, 116)
HSL	hsl(226, 67%, 27%)
HSV	hsv(226, 80%, 45%)
CMYK	cmyk(80.2%, 61.2%, 0%, 54.5%)
CIE-LAB	lab(21.28, 19.42, -43.26)
CIE-LCH	lch(21.28, 47.42, 294.18°)
OKLab	oklab(32.86% -0.0081 -0.1249)
OKLCH	oklch(32.86% 0.125 266.3)
XYZ	xyz(4.4430, 3.3194, 16.9262)
Luminance	0.0332 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D74 #745E17

analogous

#175C74 #172D74 #2F1774

triadic

#172D74 #74172D #2D7417

tetradic

#172D74 #74175C #745E17 #17742F

square

#172D74 #74175C #745E17 #17742F

split-complementary

#172D74 #742F17 #5C7417

monochromatic

#050A1A #0D1941 #172D74 #2141A7 #3057D6

Accessibility & contrast

On white

12.62

#172D74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#172D74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D74

12.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D74	#FFFFFF	#000000	##FFFFFF
##172D74	1.00	12.62	1.66	12.62
#FFFFFF	12.62	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003876

Deuteranopia (green-blind)

#002F73

Tritanopia (blue-blind)

#003F4B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172d74;
/* rgb */ color: rgb(23, 45, 116);
/* oklch */ color: oklch(32.9% 0.125 266.3);

Tailwind

colors: {
  custom: {
    50: '#64659d',
    500: '#172d74',
    950: '#000000',
  },
}

SCSS

$custom: #172d74;
$custom-light: #64659d;
$custom-dark: #000000;

JSON

{
  "hex": "#172d74",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 116
  },
  "hsl": {
    "h": 225.806,
    "s": 66.906,
    "l": 27.255
  },
  "oklch": {
    "l": 0.32864,
    "c": 0.1252,
    "h": 266.3
  },
  "luminance": 0.0332
}

Semantic roles & 50–950 ramp

primary

#172D74

secondary

#A9903D

accent

#C13EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172D74

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

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