#171A58#171A58

#171A58 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.2% C 0.109 H 273.8°. Best body text is #FFFFFF at 15.85:1 contrast (WCAG AA passes).

Color values

HEX	#171A58
RGB	rgb(23, 26, 88)
HSL	hsl(237, 59%, 22%)
HSV	hsv(237, 74%, 35%)
CMYK	cmyk(73.9%, 70.5%, 0%, 65.5%)
CIE-LAB	lab(13.38, 21.72, -37.77)
CIE-LCH	lch(13.38, 43.57, 299.90°)
OKLab	oklab(26.22% 0.0073 -0.1091)
OKLCH	oklch(26.22% 0.109 273.8)
XYZ	xyz(2.4836, 1.6253, 9.4135)
Luminance	0.0163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A58 #585517

analogous

#173B58 #171A58 #351758

triadic

#171A58 #58171A #1A5817

tetradic

#171A58 #58173B #585517 #175835

square

#171A58 #58173B #585517 #175835

split-complementary

#171A58 #583517 #3B5817

monochromatic

#060718 #0A0C27 #171A58 #242889 #3037B9

Accessibility & contrast

On white

15.85

#171A58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#171A58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A58

15.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A58	#FFFFFF	#000000	##FFFFFF
##171A58	1.00	15.85	1.33	15.85
#FFFFFF	15.85	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00255A

Deuteranopia (green-blind)

#001F57

Tritanopia (blue-blind)

#002A36

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #171a58;
/* rgb */ color: rgb(23, 26, 88);
/* oklch */ color: oklch(26.2% 0.109 273.8);

Tailwind

colors: {
  custom: {
    50: '#5e5688',
    500: '#171a58',
    950: '#000000',
  },
}

SCSS

$custom: #171a58;
$custom-light: #5e5688;
$custom-dark: #000000;

JSON

{
  "hex": "#171a58",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 88
  },
  "hsl": {
    "h": 237.231,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26218,
    "c": 0.10931,
    "h": 273.8
  },
  "luminance": 0.01626
}

Semantic roles & 50–950 ramp

primary

#171A58

secondary

#8F8B3C

accent

#DB46E2

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #171A58

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

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