#170D59#170D59

#170D59 is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.2% C 0.126 H 277.3°. Best body text is #FFFFFF at 16.96:1 contrast (WCAG AA passes).

Color values

HEX	#170D59
RGB	rgb(23, 13, 89)
HSL	hsl(248, 75%, 20%)
HSV	hsv(248, 85%, 35%)
CMYK	cmyk(74.2%, 85.4%, 0%, 65.1%)
CIE-LAB	lab(10.49, 30.43, -43.21)
CIE-LCH	lch(10.49, 52.85, 305.16°)
OKLab	oklab(24.19% 0.0159 -0.1249)
OKLCH	oklch(24.19% 0.126 277.3)
XYZ	xyz(2.2999, 1.1911, 9.5580)
Luminance	0.0119 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D59 #4F590D

analogous

#0D2959 #170D59 #3D0D59

triadic

#170D59 #59170D #0D5917

tetradic

#170D59 #590D29 #4F590D #0D593D

square

#170D59 #590D29 #4F590D #0D593D

split-complementary

#170D59 #593D0D #29590D

monochromatic

#07041B #090524 #170D59 #25158E #331DC4

Accessibility & contrast

On white

16.96

#170D59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#170D59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D59

16.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D59	#FFFFFF	#000000	##FFFFFF
##170D59	1.00	16.96	1.24	16.96
#FFFFFF	16.96	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F5B

Deuteranopia (green-blind)

#001958

Tritanopia (blue-blind)

#002433

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #170d59;
/* rgb */ color: rgb(23, 13, 89);
/* oklch */ color: oklch(24.2% 0.126 277.3);

Tailwind

colors: {
  custom: {
    50: '#604e89',
    500: '#170d59',
    950: '#000000',
  },
}

SCSS

$custom: #170d59;
$custom-light: #604e89;
$custom-dark: #000000;

JSON

{
  "hex": "#170d59",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 89
  },
  "hsl": {
    "h": 247.895,
    "s": 74.51,
    "l": 20
  },
  "oklch": {
    "l": 0.24188,
    "c": 0.12587,
    "h": 277.3
  },
  "luminance": 0.01191
}

Semantic roles & 50–950 ramp

primary

#170D59

secondary

#86932E

accent

#F137D9

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#05010C

muted

#79777D

Preview Lab

Preview with #170D59

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

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