#17153F#17153F

#17153F is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.7% C 0.078 H 280.4°. Best body text is #FFFFFF at 17.28:1 contrast (WCAG AA passes).

Color values

HEX	#17153F
RGB	rgb(23, 21, 63)
HSL	hsl(243, 50%, 16%)
HSV	hsv(243, 67%, 25%)
CMYK	cmyk(63.5%, 66.7%, 0%, 75.3%)
CIE-LAB	lab(9.62, 15.50, -26.63)
CIE-LCH	lch(9.62, 30.81, 300.20°)
OKLab	oklab(22.72% 0.014 -0.0764)
OKLCH	oklch(22.72% 0.078 280.4)
XYZ	xyz(1.5184, 1.0773, 4.8296)
Luminance	0.0108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17153F #3D3F15

analogous

#15283F #17153F #2C153F

triadic

#17153F #3F1715 #153F17

tetradic

#17153F #3F1528 #3D3F15 #153F2C

square

#17153F #3F1528 #3D3F15 #153F2C

split-complementary

#17153F #3F2C15 #283F15

monochromatic

#080817 #080817 #17153F #28246D #39349B

Accessibility & contrast

On white

17.28

#17153F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#17153F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17153F

17.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17153F	#FFFFFF	#000000	##FFFFFF
##17153F	1.00	17.28	1.22	17.28
#FFFFFF	17.28	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C40

Deuteranopia (green-blind)

#00193E

Tritanopia (blue-blind)

#041F27

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #17153f;
/* rgb */ color: rgb(23, 21, 63);
/* oklch */ color: oklch(22.7% 0.078 280.4);

Tailwind

colors: {
  custom: {
    50: '#595274',
    500: '#17153f',
    950: '#000000',
  },
}

SCSS

$custom: #17153f;
$custom-light: #595274;
$custom-dark: #000000;

JSON

{
  "hex": "#17153f",
  "rgb": {
    "r": 23,
    "g": 21,
    "b": 63
  },
  "hsl": {
    "h": 242.857,
    "s": 50,
    "l": 16.471
  },
  "oklch": {
    "l": 0.22718,
    "c": 0.07763,
    "h": 280.4
  },
  "luminance": 0.01077
}

Semantic roles & 50–950 ramp

primary

#17153F

secondary

#747739

accent

#DA4ED3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040208

muted

#79787B

Preview Lab

Preview with #17153F

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

Preview Lab → · Contrast checker → · Palette generator →