#172A7D#172A7D

#172A7D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.1% C 0.142 H 267.5°. Best body text is #FFFFFF at 12.62:1 contrast (WCAG AA passes).

Color values

HEX	#172A7D
RGB	rgb(23, 42, 125)
HSL	hsl(229, 69%, 29%)
HSV	hsv(229, 82%, 49%)
CMYK	cmyk(81.6%, 66.4%, 0%, 51%)
CIE-LAB	lab(21.28, 25.19, -49.01)
CIE-LCH	lch(21.28, 55.10, 297.20°)
OKLab	oklab(33.12% -0.0061 -0.1418)
OKLCH	oklch(33.12% 0.142 267.5)
XYZ	xyz(4.8817, 3.3182, 19.7813)
Luminance	0.0332 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A7D #7D6A17

analogous

#175D7D #172A7D #37177D

triadic

#172A7D #7D172A #2A7D17

tetradic

#172A7D #7D175D #7D6A17 #177D37

square

#172A7D #7D175D #7D6A17 #177D37

split-complementary

#172A7D #7D3717 #5D7D17

monochromatic

#05091A #0D1949 #172A7D #213BB1 #3553DA

Accessibility & contrast

On white

12.62

#172A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#172A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A7D

12.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A7D	#FFFFFF	#000000	##FFFFFF
##172A7D	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)

#003880

Deuteranopia (green-blind)

#002E7B

Tritanopia (blue-blind)

#00404F

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172a7d;
/* rgb */ color: rgb(23, 42, 125);
/* oklch */ color: oklch(33.1% 0.142 267.5);

Tailwind

colors: {
  custom: {
    50: '#6763a3',
    500: '#172a7d',
    950: '#000000',
  },
}

SCSS

$custom: #172a7d;
$custom-light: #6763a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172a7d",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 125
  },
  "hsl": {
    "h": 228.824,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.33116,
    "c": 0.14195,
    "h": 267.5
  },
  "luminance": 0.03319
}

Semantic roles & 50–950 ramp

primary

#172A7D

secondary

#B29C3E

accent

#CB3CEC

background

#F6F5FA

surface

#EBEAF4

border

#C6C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #172A7D

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

Preview Lab → · Contrast checker → · Palette generator →