#170E51#170E51

#170E51 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.4% C 0.114 H 278.9°. Best body text is #FFFFFF at 17.24:1 contrast (WCAG AA passes).

Color values

HEX	#170E51
RGB	rgb(23, 14, 81)
HSL	hsl(248, 71%, 19%)
HSV	hsv(248, 83%, 32%)
CMYK	cmyk(71.6%, 82.7%, 0%, 68.2%)
CIE-LAB	lab(9.72, 27.06, -39.03)
CIE-LCH	lch(9.72, 47.49, 304.73°)
OKLab	oklab(23.36% 0.0177 -0.1127)
OKLCH	oklch(23.36% 0.114 278.9)
XYZ	xyz(1.9951, 1.0902, 7.8883)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170E51 #48510E

analogous

#0E2651 #170E51 #380E51

triadic

#170E51 #51170E #0E5117

tetradic

#170E51 #510E26 #48510E #0E5138

square

#170E51 #510E26 #48510E #0E5138

split-complementary

#170E51 #51380E #26510E

monochromatic

#07051A #08051D #170E51 #261785 #3520B9

Accessibility & contrast

On white

17.24

#170E51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#170E51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170E51

17.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170E51	#FFFFFF	#000000	##FFFFFF
##170E51	1.00	17.24	1.22	17.24
#FFFFFF	17.24	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D53

Deuteranopia (green-blind)

#001850

Tritanopia (blue-blind)

#00212F

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #170e51;
/* rgb */ color: rgb(23, 14, 81);
/* oklch */ color: oklch(23.4% 0.114 278.9);

Tailwind

colors: {
  custom: {
    50: '#5e4e83',
    500: '#170e51',
    950: '#000000',
  },
}

SCSS

$custom: #170e51;
$custom-light: #5e4e83;
$custom-dark: #000000;

JSON

{
  "hex": "#170e51",
  "rgb": {
    "r": 23,
    "g": 14,
    "b": 81
  },
  "hsl": {
    "h": 248.06,
    "s": 70.526,
    "l": 18.627
  },
  "oklch": {
    "l": 0.23361,
    "c": 0.11408,
    "h": 278.9
  },
  "luminance": 0.0109
}

Semantic roles & 50–950 ramp

primary

#170E51

secondary

#7F8C2F

accent

#ED3AD5

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #170E51

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

Preview Lab → · Contrast checker → · Palette generator →