#172B7D#172B7D

#172B7D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.3% C 0.141 H 267.3°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#172B7D
RGB	rgb(23, 43, 125)
HSL	hsl(228, 69%, 29%)
HSV	hsv(228, 82%, 49%)
CMYK	cmyk(81.6%, 65.6%, 0%, 51%)
CIE-LAB	lab(21.54, 24.49, -48.57)
CIE-LCH	lch(21.54, 54.39, 296.76°)
OKLab	oklab(33.31% -0.0067 -0.1405)
OKLCH	oklch(33.31% 0.141 267.3)
XYZ	xyz(4.9176, 3.3900, 19.7932)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B7D #7D6917

analogous

#175E7D #172B7D #36177D

triadic

#172B7D #7D172B #2B7D17

tetradic

#172B7D #7D175E #7D6917 #177D36

square

#172B7D #7D175E #7D6917 #177D36

split-complementary

#172B7D #7D3617 #5E7D17

monochromatic

#05091A #0D1949 #172B7D #213DB1 #3555DA

Accessibility & contrast

On white

12.51

#172B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#172B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B7D

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B7D	#FFFFFF	#000000	##FFFFFF
##172B7D	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003980

Deuteranopia (green-blind)

#002F7B

Tritanopia (blue-blind)

#00414F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172b7d;
/* rgb */ color: rgb(23, 43, 125);
/* oklch */ color: oklch(33.3% 0.141 267.3);

Tailwind

colors: {
  custom: {
    50: '#6764a3',
    500: '#172b7d',
    950: '#000000',
  },
}

SCSS

$custom: #172b7d;
$custom-light: #6764a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172b7d",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 125
  },
  "hsl": {
    "h": 228.235,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.33312,
    "c": 0.14068,
    "h": 267.3
  },
  "luminance": 0.03391
}

Semantic roles & 50–950 ramp

primary

#172B7D

secondary

#B29B3E

accent

#C93CEC

background

#F6F5FA

surface

#EBEAF4

border

#C6C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #172B7D

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

Preview Lab → · Contrast checker → · Palette generator →