#313BA7#313BA7

#313BA7 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.171 H 272.4°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#313BA7
RGB	rgb(49, 59, 167)
HSL	hsl(235, 55%, 42%)
HSV	hsv(235, 71%, 65%)
CMYK	cmyk(70.7%, 64.7%, 0%, 34.5%)
CIE-LAB	lab(30.81, 32.73, -59.24)
CIE-LCH	lch(30.81, 67.68, 298.92°)
OKLab	oklab(41.67% 0.0071 -0.1711)
OKLCH	oklch(41.67% 0.171 272.4)
XYZ	xyz(9.8033, 6.5700, 37.3032)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313BA7 #A79D31

analogous

#3176A7 #313BA7 #6231A7

triadic

#313BA7 #A7313B #3BA731

tetradic

#313BA7 #A73176 #A79D31 #31A762

square

#313BA7 #A73176 #A79D31 #31A762

split-complementary

#313BA7 #A76231 #76A731

monochromatic

#151A48 #232A78 #313BA7 #4B56CA #7A82D8

Accessibility & contrast

On white

9.07

#313BA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#313BA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BA7

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BA7	#FFFFFF	#000000	##FFFFFF
##313BA7	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAA

Deuteranopia (green-blind)

#0043A5

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313ba7;
/* rgb */ color: rgb(49, 59, 167);
/* oklch */ color: oklch(41.7% 0.171 272.4);

Tailwind

colors: {
  custom: {
    50: '#7971c2',
    500: '#313ba7',
    950: '#000000',
  },
}

SCSS

$custom: #313ba7;
$custom-light: #7971c2;
$custom-dark: #000000;

JSON

{
  "hex": "#313ba7",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 167
  },
  "hsl": {
    "h": 234.915,
    "s": 54.63,
    "l": 42.353
  },
  "oklch": {
    "l": 0.41669,
    "c": 0.17123,
    "h": 272.4
  },
  "luminance": 0.06571
}

Semantic roles & 50–950 ramp

primary

#313BA7

secondary

#C1BA73

accent

#D14ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313BA7

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

Preview Lab → · Contrast checker → · Palette generator →