#17233B#17233B

#17233B is a dark, muted blue. Relative luminance 0.017; OKLCH L 25.8% C 0.049 H 263.2°. Best body text is #FFFFFF at 15.67:1 contrast (WCAG AA passes).

Color values

HEX	#17233B
RGB	rgb(23, 35, 59)
HSL	hsl(220, 44%, 16%)
HSV	hsv(220, 61%, 23%)
CMYK	cmyk(61%, 40.7%, 0%, 76.9%)
CIE-LAB	lab(13.83, 3.30, -17.07)
CIE-LCH	lch(13.83, 17.38, 280.96°)
OKLab	oklab(25.82% -0.0057 -0.0482)
OKLCH	oklch(25.82% 0.049 263.2)
XYZ	xyz(1.7435, 1.6999, 4.3731)
Luminance	0.0170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17233B #3B2F17

analogous

#17353B #17233B #1D173B

triadic

#17233B #3B1723 #233B17

tetradic

#17233B #3B1735 #3B2F17 #173B1D

square

#17233B #3B1735 #3B2F17 #173B1D

split-complementary

#17233B #3B1D17 #353B17

monochromatic

#090D16 #090D16 #17233B #283D67 #395793

Accessibility & contrast

On white

15.67

#17233B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#17233B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17233B

15.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17233B	#FFFFFF	#000000	##FFFFFF
##17233B	1.00	15.67	1.34	15.67
#FFFFFF	15.67	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A253C

Deuteranopia (green-blind)

#15223A

Tritanopia (blue-blind)

#05282C

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #17233b;
/* rgb */ color: rgb(23, 35, 59);
/* oklch */ color: oklch(25.8% 0.049 263.2);

Tailwind

colors: {
  custom: {
    50: '#575d71',
    500: '#17233b',
    950: '#000000',
  },
}

SCSS

$custom: #17233b;
$custom-light: #575d71;
$custom-dark: #000000;

JSON

{
  "hex": "#17233b",
  "rgb": {
    "r": 23,
    "g": 35,
    "b": 59
  },
  "hsl": {
    "h": 220,
    "s": 43.902,
    "l": 16.078
  },
  "oklch": {
    "l": 0.25817,
    "c": 0.04851,
    "h": 263.2
  },
  "luminance": 0.017
}

Semantic roles & 50–950 ramp

primary

#17233B

secondary

#72603C

accent

#A954D4

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #17233B

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

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