#031539#031539

#031539 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 20.7% C 0.075 H 260.9°. Best body text is #FFFFFF at 17.95:1 contrast (WCAG AA passes).

Color values

HEX	#031539
RGB	rgb(3, 21, 57)
HSL	hsl(220, 90%, 12%)
HSV	hsv(220, 95%, 22%)
CMYK	cmyk(94.7%, 63.2%, 0%, 77.6%)
CIE-LAB	lab(7.69, 9.05, -25.53)
CIE-LCH	lch(7.69, 27.09, 289.51°)
OKLab	oklab(20.73% -0.0118 -0.0737)
OKLCH	oklch(20.73% 0.075 260.9)
XYZ	xyz(1.0440, 0.8510, 3.9793)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031539 #392703

analogous

#033039 #031539 #0C0339

triadic

#031539 #390315 #153903

tetradic

#031539 #390330 #392703 #03390C

square

#031539 #390330 #392703 #03390C

split-complementary

#031539 #390C03 #303903

monochromatic

#020B1D #020B1D #031539 #062A73 #0940AD

Accessibility & contrast

On white

17.95

#031539 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#031539 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031539

17.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031539	#FFFFFF	#000000	##FFFFFF
##031539	1.00	17.95	1.17	17.95
#FFFFFF	17.95	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A3A

Deuteranopia (green-blind)

#001438

Tritanopia (blue-blind)

#001E24

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #031539;
/* rgb */ color: rgb(3, 21, 57);
/* oklch */ color: oklch(20.7% 0.075 260.9);

Tailwind

colors: {
  custom: {
    50: '#4e5170',
    500: '#031539',
    950: '#000000',
  },
}

SCSS

$custom: #031539;
$custom-light: #4e5170;
$custom-dark: #000000;

JSON

{
  "hex": "#031539",
  "rgb": {
    "r": 3,
    "g": 21,
    "b": 57
  },
  "hsl": {
    "h": 220,
    "s": 90,
    "l": 11.765
  },
  "oklch": {
    "l": 0.20725,
    "c": 0.07468,
    "h": 260.9
  },
  "luminance": 0.00851
}

Semantic roles & 50–950 ramp

primary

#031539

secondary

#7C5C1C

accent

#B829FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #031539

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

Preview Lab → · Contrast checker → · Palette generator →