#171958#171958

#171958 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.0% C 0.111 H 274.2°. Best body text is #FFFFFF at 15.95:1 contrast (WCAG AA passes).

Color values

HEX	#171958
RGB	rgb(23, 25, 88)
HSL	hsl(238, 59%, 22%)
HSV	hsv(238, 74%, 35%)
CMYK	cmyk(73.9%, 71.6%, 0%, 65.5%)
CIE-LAB	lab(13.12, 22.42, -38.21)
CIE-LCH	lch(13.12, 44.30, 300.41°)
OKLab	oklab(26.03% 0.0081 -0.1103)
OKLCH	oklch(26.03% 0.111 274.2)
XYZ	xyz(2.4618, 1.5818, 9.4062)
Luminance	0.0158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171958 #585617

analogous

#173A58 #171958 #361758

triadic

#171958 #581719 #195817

tetradic

#171958 #58173A #585617 #175836

square

#171958 #58173A #585617 #175836

split-complementary

#171958 #583617 #3A5817

monochromatic

#060718 #0A0B27 #171958 #242789 #3035B9

Accessibility & contrast

On white

15.95

#171958 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#171958 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171958

15.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171958	#FFFFFF	#000000	##FFFFFF
##171958	1.00	15.95	1.32	15.95
#FFFFFF	15.95	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.95	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: #171958;
/* rgb */ color: rgb(23, 25, 88);
/* oklch */ color: oklch(26.0% 0.111 274.2);

Tailwind

colors: {
  custom: {
    50: '#5f5688',
    500: '#171958',
    950: '#000000',
  },
}

SCSS

$custom: #171958;
$custom-light: #5f5688;
$custom-dark: #000000;

JSON

{
  "hex": "#171958",
  "rgb": {
    "r": 23,
    "g": 25,
    "b": 88
  },
  "hsl": {
    "h": 238.154,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26025,
    "c": 0.11064,
    "h": 274.2
  },
  "luminance": 0.01582
}

Semantic roles & 50–950 ramp

primary

#171958

secondary

#8F8C3C

accent

#DD46E2

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #171958

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

Preview Lab → · Contrast checker → · Palette generator →