#313EA4#313EA4

#313EA4 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.9% C 0.164 H 271.7°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#313EA4
RGB	rgb(49, 62, 164)
HSL	hsl(233, 54%, 42%)
HSV	hsv(233, 70%, 64%)
CMYK	cmyk(70.1%, 62.2%, 0%, 35.7%)
CIE-LAB	lab(31.30, 29.70, -56.64)
CIE-LCH	lch(31.30, 63.96, 297.67°)
OKLab	oklab(41.95% 0.005 -0.1634)
OKLCH	oklch(41.95% 0.164 271.7)
XYZ	xyz(9.6878, 6.7776, 35.9124)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EA4 #A49731

analogous

#3178A4 #313EA4 #5D31A4

triadic

#313EA4 #A4313E #3EA431

tetradic

#313EA4 #A43178 #A49731 #31A45D

square

#313EA4 #A43178 #A49731 #31A45D

split-complementary

#313EA4 #A45D31 #78A431

monochromatic

#151A46 #232C75 #313EA4 #4958C9 #7983D7

Accessibility & contrast

On white

8.91

#313EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#313EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EA4

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EA4	#FFFFFF	#000000	##FFFFFF
##313EA4	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)

#004FA7

Deuteranopia (green-blind)

#0044A2

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313ea4;
/* rgb */ color: rgb(49, 62, 164);
/* oklch */ color: oklch(41.9% 0.164 271.7);

Tailwind

colors: {
  custom: {
    50: '#7973c0',
    500: '#313ea4',
    950: '#000000',
  },
}

SCSS

$custom: #313ea4;
$custom-light: #7973c0;
$custom-dark: #000000;

JSON

{
  "hex": "#313ea4",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 164
  },
  "hsl": {
    "h": 233.217,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41948,
    "c": 0.1635,
    "h": 271.7
  },
  "luminance": 0.06779
}

Semantic roles & 50–950 ramp

primary

#313EA4

secondary

#BFB672

accent

#CD4ADD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313EA4

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

Preview Lab → · Contrast checker → · Palette generator →