#313DA7#313DA7

#313DA7 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.169 H 271.9°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#313DA7
RGB	rgb(49, 61, 167)
HSL	hsl(234, 55%, 42%)
HSV	hsv(234, 71%, 65%)
CMYK	cmyk(70.7%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(31.30, 31.44, -58.44)
CIE-LCH	lch(31.30, 66.36, 298.28°)
OKLab	oklab(42.03% 0.0056 -0.1687)
OKLCH	oklch(42.03% 0.169 271.9)
XYZ	xyz(9.9081, 6.7795, 37.3381)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DA7 #A79B31

analogous

#3178A7 #313DA7 #6031A7

triadic

#313DA7 #A7313D #3DA731

tetradic

#313DA7 #A73178 #A79B31 #31A760

square

#313DA7 #A73178 #A79B31 #31A760

split-complementary

#313DA7 #A76031 #78A731

monochromatic

#151A48 #232C78 #313DA7 #4B58CA #7A84D8

Accessibility & contrast

On white

8.91

#313DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#313DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DA7

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DA7	#FFFFFF	#000000	##FFFFFF
##313DA7	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0044A5

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313da7;
/* rgb */ color: rgb(49, 61, 167);
/* oklch */ color: oklch(42.0% 0.169 271.9);

Tailwind

colors: {
  custom: {
    50: '#7972c2',
    500: '#313da7',
    950: '#000000',
  },
}

SCSS

$custom: #313da7;
$custom-light: #7972c2;
$custom-dark: #000000;

JSON

{
  "hex": "#313da7",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 233.898,
    "s": 54.63,
    "l": 42.353
  },
  "oklch": {
    "l": 0.4203,
    "c": 0.16879,
    "h": 271.9
  },
  "luminance": 0.0678
}

Semantic roles & 50–950 ramp

primary

#313DA7

secondary

#C1B973

accent

#CF4ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313DA7

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

Preview Lab → · Contrast checker → · Palette generator →