#170F4F#170F4F

#170F4F is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.3% C 0.110 H 279.2°. Best body text is #FFFFFF at 17.25:1 contrast (WCAG AA passes).

Color values

HEX	#170F4F
RGB	rgb(23, 15, 79)
HSL	hsl(248, 68%, 18%)
HSV	hsv(248, 81%, 31%)
CMYK	cmyk(70.9%, 81%, 0%, 69%)
CIE-LAB	lab(9.71, 25.73, -37.68)
CIE-LCH	lch(9.71, 45.62, 304.33°)
OKLab	oklab(23.28% 0.0175 -0.1088)
OKLCH	oklch(23.28% 0.11 279.2)
XYZ	xyz(1.9350, 1.0882, 7.5037)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F4F #474F0F

analogous

#0F274F #170F4F #370F4F

triadic

#170F4F #4F170F #0F4F17

tetradic

#170F4F #4F0F27 #474F0F #0F4F37

square

#170F4F #4F0F27 #474F0F #0F4F37

split-complementary

#170F4F #4F370F #274F0F

monochromatic

#07051A #08051C #170F4F #261982 #3523B6

Accessibility & contrast

On white

17.25

#170F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#170F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F4F

17.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F4F	#FFFFFF	#000000	##FFFFFF
##170F4F	1.00	17.25	1.22	17.25
#FFFFFF	17.25	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D51

Deuteranopia (green-blind)

#00184E

Tritanopia (blue-blind)

#00212E

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #170f4f;
/* rgb */ color: rgb(23, 15, 79);
/* oklch */ color: oklch(23.3% 0.110 279.2);

Tailwind

colors: {
  custom: {
    50: '#5d4e81',
    500: '#170f4f',
    950: '#000000',
  },
}

SCSS

$custom: #170f4f;
$custom-light: #5d4e81;
$custom-dark: #000000;

JSON

{
  "hex": "#170f4f",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 79
  },
  "hsl": {
    "h": 247.5,
    "s": 68.085,
    "l": 18.431
  },
  "oklch": {
    "l": 0.2328,
    "c": 0.11017,
    "h": 279.2
  },
  "luminance": 0.01088
}

Semantic roles & 50–950 ramp

primary

#170F4F

secondary

#7E8931

accent

#EB3DD5

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05020A

muted

#79787C

Preview Lab

Preview with #170F4F

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

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