#313CA4#313CA4

#313CA4 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.6% C 0.166 H 272.3°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#313CA4
RGB	rgb(49, 60, 164)
HSL	hsl(234, 54%, 42%)
HSV	hsv(234, 70%, 64%)
CMYK	cmyk(70.1%, 63.4%, 0%, 35.7%)
CIE-LAB	lab(30.79, 31.00, -57.46)
CIE-LCH	lch(30.79, 65.29, 298.35°)
OKLab	oklab(41.58% 0.0065 -0.1658)
OKLCH	oklch(41.58% 0.166 272.3)
XYZ	xyz(9.5811, 6.5641, 35.8768)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313CA4 #A49931

analogous

#3176A4 #313CA4 #6031A4

triadic

#313CA4 #A4313C #3CA431

tetradic

#313CA4 #A43176 #A49931 #31A460

square

#313CA4 #A43176 #A49931 #31A460

split-complementary

#313CA4 #A46031 #76A431

monochromatic

#151A46 #232B75 #313CA4 #4956C9 #7982D7

Accessibility & contrast

On white

9.08

#313CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#313CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313CA4

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313CA4	#FFFFFF	#000000	##FFFFFF
##313CA4	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA7

Deuteranopia (green-blind)

#0043A2

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313ca4;
/* rgb */ color: rgb(49, 60, 164);
/* oklch */ color: oklch(41.6% 0.166 272.3);

Tailwind

colors: {
  custom: {
    50: '#7971c0',
    500: '#313ca4',
    950: '#000000',
  },
}

SCSS

$custom: #313ca4;
$custom-light: #7971c0;
$custom-dark: #000000;

JSON

{
  "hex": "#313ca4",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 164
  },
  "hsl": {
    "h": 234.261,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41578,
    "c": 0.16597,
    "h": 272.3
  },
  "luminance": 0.06565
}

Semantic roles & 50–950 ramp

primary

#313CA4

secondary

#BFB872

accent

#CF4ADD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313CA4

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

Preview Lab → · Contrast checker → · Palette generator →