#172B90#172B90

#172B90 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.3% C 0.167 H 267.3°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#172B90
RGB	rgb(23, 43, 144)
HSL	hsl(230, 72%, 33%)
HSV	hsv(230, 84%, 56%)
CMYK	cmyk(84%, 70.1%, 0%, 43.5%)
CIE-LAB	lab(23.41, 31.92, -57.40)
CIE-LCH	lch(23.41, 65.67, 299.08°)
OKLab	oklab(35.25% -0.0077 -0.1663)
OKLCH	oklch(35.25% 0.167 267.3)
XYZ	xyz(6.2495, 3.9228, 26.8079)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B90 #907C17

analogous

#176790 #172B90 #401790

triadic

#172B90 #90172B #2B9017

tetradic

#172B90 #901767 #907C17 #179040

square

#172B90 #901767 #907C17 #179040

split-complementary

#172B90 #904017 #679017

monochromatic

#060B26 #0F1B5B #172B90 #1F3BC5 #415BE1

Accessibility & contrast

On white

11.77

#172B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#172B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B90

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B90	#FFFFFF	#000000	##FFFFFF
##172B90	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E93

Deuteranopia (green-blind)

#00328E

Tritanopia (blue-blind)

#00475A

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #172b90;
/* rgb */ color: rgb(23, 43, 144);
/* oklch */ color: oklch(35.3% 0.167 267.3);

Tailwind

colors: {
  custom: {
    50: '#6c64b2',
    500: '#172b90',
    950: '#000000',
  },
}

SCSS

$custom: #172b90;
$custom-light: #6c64b2;
$custom-dark: #000000;

JSON

{
  "hex": "#172b90",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 144
  },
  "hsl": {
    "h": 230.083,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35253,
    "c": 0.1665,
    "h": 267.3
  },
  "luminance": 0.03924
}

Semantic roles & 50–950 ramp

primary

#172B90

secondary

#C1AC42

accent

#D139EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #172B90

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

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