#171D74#171D74

#171D74 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.145 H 270.7°. Best body text is #FFFFFF at 14.34:1 contrast (WCAG AA passes).

Color values

HEX	#171D74
RGB	rgb(23, 29, 116)
HSL	hsl(236, 67%, 27%)
HSV	hsv(236, 80%, 45%)
CMYK	cmyk(80.2%, 75%, 0%, 54.5%)
CIE-LAB	lab(17.09, 30.47, -50.13)
CIE-LCH	lch(17.09, 58.66, 301.29°)
OKLab	oklab(29.79% 0.0018 -0.1451)
OKLCH	oklch(29.79% 0.145 270.7)
XYZ	xyz(3.9440, 2.3214, 16.7598)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D74 #746E17

analogous

#174C74 #171D74 #401774

triadic

#171D74 #74171D #1D7417

tetradic

#171D74 #74174C #746E17 #177440

square

#171D74 #74174C #746E17 #177440

split-complementary

#171D74 #744017 #4C7417

monochromatic

#05061A #0D1041 #171D74 #212AA7 #303AD6

Accessibility & contrast

On white

14.34

#171D74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#171D74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D74

14.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D74	#FFFFFF	#000000	##FFFFFF
##171D74	1.00	14.34	1.46	14.34
#FFFFFF	14.34	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F77

Deuteranopia (green-blind)

#002672

Tritanopia (blue-blind)

#003646

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171d74;
/* rgb */ color: rgb(23, 29, 116);
/* oklch */ color: oklch(29.8% 0.145 270.7);

Tailwind

colors: {
  custom: {
    50: '#66599d',
    500: '#171d74',
    950: '#000000',
  },
}

SCSS

$custom: #171d74;
$custom-light: #66599d;
$custom-dark: #000000;

JSON

{
  "hex": "#171d74",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 116
  },
  "hsl": {
    "h": 236.129,
    "s": 66.906,
    "l": 27.255
  },
  "oklch": {
    "l": 0.29793,
    "c": 0.14516,
    "h": 270.7
  },
  "luminance": 0.02322
}

Semantic roles & 50–950 ramp

primary

#171D74

secondary

#A9A23D

accent

#DF3EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171D74

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

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