#031638#031638

#031638 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 20.9% C 0.072 H 259.7°. Best body text is #FFFFFF at 17.86:1 contrast (WCAG AA passes).

Color values

HEX	#031638
RGB	rgb(3, 22, 56)
HSL	hsl(218, 90%, 12%)
HSV	hsv(218, 95%, 22%)
CMYK	cmyk(94.6%, 60.7%, 0%, 78%)
CIE-LAB	lab(7.94, 7.76, -24.41)
CIE-LCH	lch(7.94, 25.61, 287.63°)
OKLab	oklab(20.89% -0.0128 -0.0704)
OKLCH	oklch(20.89% 0.072 259.7)
XYZ	xyz(1.0380, 0.8786, 3.8555)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031638 #382503

analogous

#033138 #031638 #0B0338

triadic

#031638 #380316 #163803

tetradic

#031638 #380331 #382503 #03380B

square

#031638 #380331 #382503 #03380B

split-complementary

#031638 #380B03 #313803

monochromatic

#020B1D #020B1D #031638 #062D72 #0944AC

Accessibility & contrast

On white

17.86

#031638 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#031638 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031638

17.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031638	#FFFFFF	#000000	##FFFFFF
##031638	1.00	17.86	1.18	17.86
#FFFFFF	17.86	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021A39

Deuteranopia (green-blind)

#001537

Tritanopia (blue-blind)

#001E24

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #031638;
/* rgb */ color: rgb(3, 22, 56);
/* oklch */ color: oklch(20.9% 0.072 259.7);

Tailwind

colors: {
  custom: {
    50: '#4d526f',
    500: '#031638',
    950: '#000000',
  },
}

SCSS

$custom: #031638;
$custom-light: #4d526f;
$custom-dark: #000000;

JSON

{
  "hex": "#031638",
  "rgb": {
    "r": 3,
    "g": 22,
    "b": 56
  },
  "hsl": {
    "h": 218.491,
    "s": 89.831,
    "l": 11.569
  },
  "oklch": {
    "l": 0.20889,
    "c": 0.07154,
    "h": 259.7
  },
  "luminance": 0.00879
}

Semantic roles & 50–950 ramp

primary

#031638

secondary

#7B591C

accent

#B229FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #031638

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

Preview Lab → · Contrast checker → · Palette generator →