#172E7B#172E7B

#172E7B is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.7% C 0.134 H 266.3°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#172E7B
RGB	rgb(23, 46, 123)
HSL	hsl(226, 68%, 29%)
HSV	hsv(226, 81%, 48%)
CMYK	cmyk(81.3%, 62.6%, 0%, 51.8%)
CIE-LAB	lab(22.18, 21.57, -46.26)
CIE-LCH	lch(22.18, 51.04, 295.00°)
OKLab	oklab(33.73% -0.0086 -0.1337)
OKLCH	oklch(33.73% 0.134 266.3)
XYZ	xyz(4.9042, 3.5656, 19.1648)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E7B #7B6417

analogous

#17607B #172E7B #32177B

triadic

#172E7B #7B172E #2E7B17

tetradic

#172E7B #7B1760 #7B6417 #177B32

square

#172E7B #7B1760 #7B6417 #177B32

split-complementary

#172E7B #7B3217 #607B17

monochromatic

#050A1A #0D1B47 #172E7B #2141AF #335AD9

Accessibility & contrast

On white

12.26

#172E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#172E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E7B

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E7B	#FFFFFF	#000000	##FFFFFF
##172E7B	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7E

Deuteranopia (green-blind)

#00317A

Tritanopia (blue-blind)

#00424F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172e7b;
/* rgb */ color: rgb(23, 46, 123);
/* oklch */ color: oklch(33.7% 0.134 266.3);

Tailwind

colors: {
  custom: {
    50: '#6666a2',
    500: '#172e7b',
    950: '#000000',
  },
}

SCSS

$custom: #172e7b;
$custom-light: #6666a2;
$custom-dark: #000000;

JSON

{
  "hex": "#172e7b",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 123
  },
  "hsl": {
    "h": 226.2,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.33728,
    "c": 0.13399,
    "h": 266.3
  },
  "luminance": 0.03566
}

Semantic roles & 50–950 ramp

primary

#172E7B

secondary

#B0963E

accent

#C33CEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172E7B

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

Preview Lab → · Contrast checker → · Palette generator →