#31337A#31337A

#31337A is a dark, moderate blue. Relative luminance 0.044; OKLCH L 36.2% C 0.118 H 277.5°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#31337A
RGB	rgb(49, 51, 122)
HSL	hsl(238, 43%, 34%)
HSV	hsv(238, 60%, 48%)
CMYK	cmyk(59.8%, 58.2%, 0%, 52.2%)
CIE-LAB	lab(25.03, 21.81, -40.92)
CIE-LCH	lch(25.03, 46.37, 298.06°)
OKLab	oklab(36.24% 0.0155 -0.1173)
OKLCH	oklch(36.24% 0.118 277.5)
XYZ	xyz(5.9622, 4.4253, 18.9486)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31337A #7A7831

analogous

#31577A #31337A #53317A

triadic

#31337A #7A3133 #337A31

tetradic

#31337A #7A3157 #7A7831 #317A53

square

#31337A #7A3157 #7A7831 #317A53

split-complementary

#31337A #7A5331 #577A31

monochromatic

#0E0E23 #1F214E #31337A #4345A6 #6467C1

Accessibility & contrast

On white

11.14

#31337A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#31337A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31337A

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31337A	#FFFFFF	#000000	##FFFFFF
##31337A	1.00	11.14	1.89	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7C

Deuteranopia (green-blind)

#003879

Tritanopia (blue-blind)

#044451

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #31337a;
/* rgb */ color: rgb(49, 51, 122);
/* oklch */ color: oklch(36.2% 0.118 277.5);

Tailwind

colors: {
  custom: {
    50: '#716aa1',
    500: '#31337a',
    950: '#000000',
  },
}

SCSS

$custom: #31337a;
$custom-light: #716aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#31337a",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 122
  },
  "hsl": {
    "h": 238.356,
    "s": 42.69,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36241,
    "c": 0.11833,
    "h": 277.5
  },
  "luminance": 0.04426
}

Semantic roles & 50–950 ramp

primary

#31337A

secondary

#A8A65E

accent

#CF55D2

background

#F7F6FA

surface

#EDEBF3

border

#C8C6CD

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #31337A

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

Preview Lab → · Contrast checker → · Palette generator →