#172B8E#172B8E

#172B8E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.0% C 0.164 H 267.4°. Best body text is #FFFFFF at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#172B8E
RGB	rgb(23, 43, 142)
HSL	hsl(230, 72%, 32%)
HSV	hsv(230, 84%, 56%)
CMYK	cmyk(83.8%, 69.7%, 0%, 44.3%)
CIE-LAB	lab(23.21, 31.15, -56.49)
CIE-LCH	lch(23.21, 64.51, 298.88°)
OKLab	oklab(35.04% -0.0075 -0.1637)
OKLCH	oklch(35.04% 0.164 267.4)
XYZ	xyz(6.0980, 3.8622, 26.0100)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B8E #8E7A17

analogous

#17678E #172B8E #3F178E

triadic

#172B8E #8E172B #2B8E17

tetradic

#172B8E #8E1767 #8E7A17 #178E3F

square

#172B8E #8E1767 #8E7A17 #178E3F

split-complementary

#172B8E #8E3F17 #678E17

monochromatic

#060B25 #0E1B59 #172B8E #203BC3 #3F5AE0

Accessibility & contrast

On white

11.85

#172B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#172B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B8E

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B8E	#FFFFFF	#000000	##FFFFFF
##172B8E	1.00	11.85	1.77	11.85
#FFFFFF	11.85	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D91

Deuteranopia (green-blind)

#00328C

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #172b8e;
/* rgb */ color: rgb(23, 43, 142);
/* oklch */ color: oklch(35.0% 0.164 267.4);

Tailwind

colors: {
  custom: {
    50: '#6c64b0',
    500: '#172b8e',
    950: '#000000',
  },
}

SCSS

$custom: #172b8e;
$custom-light: #6c64b0;
$custom-dark: #000000;

JSON

{
  "hex": "#172b8e",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 142
  },
  "hsl": {
    "h": 229.916,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.35043,
    "c": 0.16385,
    "h": 267.4
  },
  "luminance": 0.03863
}

Semantic roles & 50–950 ramp

primary

#172B8E

secondary

#C0AB40

accent

#D039EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #172B8E

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

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