#172F7F#172F7F

#172F7F is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.3% C 0.138 H 266.2°. Best body text is #FFFFFF at 12.00:1 contrast (WCAG AA passes).

Color values

HEX	#172F7F
RGB	rgb(23, 47, 127)
HSL	hsl(226, 69%, 29%)
HSV	hsv(226, 82%, 50%)
CMYK	cmyk(81.9%, 63%, 0%, 50.2%)
CIE-LAB	lab(22.82, 22.49, -47.75)
CIE-LCH	lch(22.82, 52.78, 295.22°)
OKLab	oklab(34.31% -0.0092 -0.1381)
OKLCH	oklch(34.31% 0.138 266.2)
XYZ	xyz(5.1993, 3.7469, 20.5238)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F7F #7F6717

analogous

#17637F #172F7F #33177F

triadic

#172F7F #7F172F #2F7F17

tetradic

#172F7F #7F1763 #7F6717 #177F33

square

#172F7F #7F1763 #7F6717 #177F33

split-complementary

#172F7F #7F3317 #637F17

monochromatic

#050A1A #0E1C4B #172F7F #2042B3 #365CDB

Accessibility & contrast

On white

12.00

#172F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#172F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F7F

12.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F7F	#FFFFFF	#000000	##FFFFFF
##172F7F	1.00	12.00	1.75	12.00
#FFFFFF	12.00	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B82

Deuteranopia (green-blind)

#00327D

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172f7f;
/* rgb */ color: rgb(23, 47, 127);
/* oklch */ color: oklch(34.3% 0.138 266.2);

Tailwind

colors: {
  custom: {
    50: '#6767a5',
    500: '#172f7f',
    950: '#000000',
  },
}

SCSS

$custom: #172f7f;
$custom-light: #6767a5;
$custom-dark: #000000;

JSON

{
  "hex": "#172f7f",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 127
  },
  "hsl": {
    "h": 226.154,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.34313,
    "c": 0.13839,
    "h": 266.2
  },
  "luminance": 0.03747
}

Semantic roles & 50–950 ramp

primary

#172F7F

secondary

#B4983E

accent

#C33CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #172F7F

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

Preview Lab → · Contrast checker → · Palette generator →