#02173A#02173A

#02173A is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.3% C 0.074 H 258.7°. Best body text is #FFFFFF at 17.70:1 contrast (WCAG AA passes).

Color values

HEX	#02173A
RGB	rgb(2, 23, 58)
HSL	hsl(218, 93%, 12%)
HSV	hsv(218, 97%, 23%)
CMYK	cmyk(96.6%, 60.3%, 0%, 77.3%)
CIE-LAB	lab(8.40, 7.74, -25.09)
CIE-LCH	lch(8.40, 26.26, 287.14°)
OKLab	oklab(21.29% -0.0145 -0.0724)
OKLCH	oklch(21.29% 0.074 258.7)
XYZ	xyz(1.0949, 0.9310, 4.1242)
Luminance	0.0093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#02173A #3A2502

analogous

#02333A #02173A #09023A

triadic

#02173A #3A0217 #173A02

tetradic

#02173A #3A0233 #3A2502 #023A09

square

#02173A #3A0233 #3A2502 #023A09

split-complementary

#02173A #3A0902 #333A02

monochromatic

#010C1E #010C1E #02173A #042E75 #0646B0

Accessibility & contrast

On white

17.70

#02173A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#02173A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #02173A

17.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##02173A	#FFFFFF	#000000	##FFFFFF
##02173A	1.00	17.70	1.19	17.70
#FFFFFF	17.70	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011B3B

Deuteranopia (green-blind)

#001639

Tritanopia (blue-blind)

#002025

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #02173a;
/* rgb */ color: rgb(2, 23, 58);
/* oklch */ color: oklch(21.3% 0.074 258.7);

Tailwind

colors: {
  custom: {
    50: '#4e5370',
    500: '#02173a',
    950: '#000000',
  },
}

SCSS

$custom: #02173a;
$custom-light: #4e5370;
$custom-dark: #000000;

JSON

{
  "hex": "#02173a",
  "rgb": {
    "r": 2,
    "g": 23,
    "b": 58
  },
  "hsl": {
    "h": 217.5,
    "s": 93.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.21286,
    "c": 0.07383,
    "h": 258.7
  },
  "luminance": 0.00931
}

Semantic roles & 50–950 ramp

primary

#02173A

secondary

#7D581A

accent

#AF29FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #02173A

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

Preview Lab → · Contrast checker → · Palette generator →