#172A7F#172A7F

#172A7F is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.3% C 0.145 H 267.6°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#172A7F
RGB	rgb(23, 42, 127)
HSL	hsl(229, 69%, 29%)
HSV	hsv(229, 82%, 50%)
CMYK	cmyk(81.9%, 66.9%, 0%, 50.2%)
CIE-LAB	lab(21.47, 25.98, -49.96)
CIE-LCH	lch(21.47, 56.31, 297.48°)
OKLab	oklab(33.32% -0.0062 -0.1446)
OKLCH	oklch(33.32% 0.145 267.6)
XYZ	xyz(5.0107, 3.3698, 20.4609)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A7F #7F6C17

analogous

#175E7F #172A7F #38177F

triadic

#172A7F #7F172A #2A7F17

tetradic

#172A7F #7F175E #7F6C17 #177F38

square

#172A7F #7F175E #7F6C17 #177F38

split-complementary

#172A7F #7F3817 #5E7F17

monochromatic

#05091A #0E194B #172A7F #203BB3 #3654DB

Accessibility & contrast

On white

12.54

#172A7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#172A7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A7F

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A7F	#FFFFFF	#000000	##FFFFFF
##172A7F	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003982

Deuteranopia (green-blind)

#002F7D

Tritanopia (blue-blind)

#004150

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172a7f;
/* rgb */ color: rgb(23, 42, 127);
/* oklch */ color: oklch(33.3% 0.145 267.6);

Tailwind

colors: {
  custom: {
    50: '#6863a5',
    500: '#172a7f',
    950: '#000000',
  },
}

SCSS

$custom: #172a7f;
$custom-light: #6863a5;
$custom-dark: #000000;

JSON

{
  "hex": "#172a7f",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 127
  },
  "hsl": {
    "h": 229.038,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.33316,
    "c": 0.14473,
    "h": 267.6
  },
  "luminance": 0.0337
}

Semantic roles & 50–950 ramp

primary

#172A7F

secondary

#B49E3E

accent

#CC3CEC

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #172A7F

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

Preview Lab → · Contrast checker → · Palette generator →