#031537#031537

#031537 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.5% C 0.071 H 260.3°. Best body text is #FFFFFF at 18.00:1 contrast (WCAG AA passes).

Color values

HEX	#031537
RGB	rgb(3, 21, 55)
HSL	hsl(219, 90%, 11%)
HSV	hsv(219, 95%, 22%)
CMYK	cmyk(94.5%, 61.8%, 0%, 78.4%)
CIE-LAB	lab(7.51, 8.05, -24.37)
CIE-LCH	lch(7.51, 25.67, 288.27°)
OKLab	oklab(20.53% -0.0121 -0.0704)
OKLCH	oklch(20.53% 0.071 260.3)
XYZ	xyz(0.9951, 0.8314, 3.7217)
Luminance	0.0083 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031537 #372503

analogous

#032F37 #031537 #0B0337

triadic

#031537 #370315 #153703

tetradic

#031537 #37032F #372503 #03370B

square

#031537 #37032F #372503 #03370B

split-complementary

#031537 #370B03 #2F3703

monochromatic

#020B1D #020B1D #031537 #062B71 #0941AB

Accessibility & contrast

On white

18.00

#031537 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#031537 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031537

18.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031537	#FFFFFF	#000000	##FFFFFF
##031537	1.00	18.00	1.17	18.00
#FFFFFF	18.00	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	18.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011938

Deuteranopia (green-blind)

#001436

Tritanopia (blue-blind)

#001D23

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #031537;
/* rgb */ color: rgb(3, 21, 55);
/* oklch */ color: oklch(20.5% 0.071 260.3);

Tailwind

colors: {
  custom: {
    50: '#4d516e',
    500: '#031537',
    950: '#000000',
  },
}

SCSS

$custom: #031537;
$custom-light: #4d516e;
$custom-dark: #000000;

JSON

{
  "hex": "#031537",
  "rgb": {
    "r": 3,
    "g": 21,
    "b": 55
  },
  "hsl": {
    "h": 219.231,
    "s": 89.655,
    "l": 11.373
  },
  "oklch": {
    "l": 0.20528,
    "c": 0.07139,
    "h": 260.3
  },
  "luminance": 0.00832
}

Semantic roles & 50–950 ramp

primary

#031537

secondary

#7A591C

accent

#B529FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #031537

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

Preview Lab → · Contrast checker → · Palette generator →