#172E7F#172E7F

#172E7F is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.1% C 0.140 H 266.5°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#172E7F
RGB	rgb(23, 46, 127)
HSL	hsl(227, 69%, 29%)
HSV	hsv(227, 82%, 50%)
CMYK	cmyk(81.9%, 63.8%, 0%, 50.2%)
CIE-LAB	lab(22.54, 23.19, -48.20)
CIE-LCH	lch(22.54, 53.49, 295.70°)
OKLab	oklab(34.11% -0.0086 -0.1394)
OKLCH	oklch(34.11% 0.14 266.5)
XYZ	xyz(5.1598, 3.6679, 20.5106)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E7F #7F6817

analogous

#17627F #172E7F #34177F

triadic

#172E7F #7F172E #2E7F17

tetradic

#172E7F #7F1762 #7F6817 #177F34

square

#172E7F #7F1762 #7F6817 #177F34

split-complementary

#172E7F #7F3417 #627F17

monochromatic

#05091A #0E1B4B #172E7F #2041B3 #365ADB

Accessibility & contrast

On white

12.11

#172E7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#172E7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E7F

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E7F	#FFFFFF	#000000	##FFFFFF
##172E7F	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B82

Deuteranopia (green-blind)

#00317D

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172e7f;
/* rgb */ color: rgb(23, 46, 127);
/* oklch */ color: oklch(34.1% 0.140 266.5);

Tailwind

colors: {
  custom: {
    50: '#6766a5',
    500: '#172e7f',
    950: '#000000',
  },
}

SCSS

$custom: #172e7f;
$custom-light: #6766a5;
$custom-dark: #000000;

JSON

{
  "hex": "#172e7f",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 127
  },
  "hsl": {
    "h": 226.731,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.34109,
    "c": 0.13968,
    "h": 266.5
  },
  "luminance": 0.03668
}

Semantic roles & 50–950 ramp

primary

#172E7F

secondary

#B49A3E

accent

#C53CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172E7F

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

Preview Lab → · Contrast checker → · Palette generator →