#02173B#02173B

#02173B is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.4% C 0.075 H 259.1°. Best body text is #FFFFFF at 17.67:1 contrast (WCAG AA passes).

Color values

HEX	#02173B
RGB	rgb(2, 23, 59)
HSL	hsl(218, 93%, 12%)
HSV	hsv(218, 97%, 23%)
CMYK	cmyk(96.6%, 61%, 0%, 76.9%)
CIE-LAB	lab(8.49, 8.23, -25.67)
CIE-LCH	lch(8.49, 26.95, 287.78°)
OKLab	oklab(21.38% -0.0143 -0.0741)
OKLCH	oklch(21.38% 0.075 259.1)
XYZ	xyz(1.1206, 0.9413, 4.2595)
Luminance	0.0094 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#02173B #3B2602

analogous

#02343B #02173B #0A023B

triadic

#02173B #3B0217 #173B02

tetradic

#02173B #3B0234 #3B2602 #023B0A

square

#02173B #3B0234 #3B2602 #023B0A

split-complementary

#02173B #3B0A02 #343B02

monochromatic

#010C1E #010C1E #02173B #042E76 #0645B1

Accessibility & contrast

On white

17.67

#02173B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#02173B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #02173B

17.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##02173B	#FFFFFF	#000000	##FFFFFF
##02173B	1.00	17.67	1.19	17.67
#FFFFFF	17.67	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B3C

Deuteranopia (green-blind)

#00163A

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #02173b;
/* rgb */ color: rgb(2, 23, 59);
/* oklch */ color: oklch(21.4% 0.075 259.1);

Tailwind

colors: {
  custom: {
    50: '#4e5371',
    500: '#02173b',
    950: '#000000',
  },
}

SCSS

$custom: #02173b;
$custom-light: #4e5371;
$custom-dark: #000000;

JSON

{
  "hex": "#02173b",
  "rgb": {
    "r": 2,
    "g": 23,
    "b": 59
  },
  "hsl": {
    "h": 217.895,
    "s": 93.443,
    "l": 11.961
  },
  "oklch": {
    "l": 0.21383,
    "c": 0.07546,
    "h": 259.1
  },
  "luminance": 0.00941
}

Semantic roles & 50–950 ramp

primary

#02173B

secondary

#7E5A1A

accent

#B029FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #02173B

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

Preview Lab → · Contrast checker → · Palette generator →