#313EA5#313EA5

#313EA5 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.165 H 271.7°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#313EA5
RGB	rgb(49, 62, 165)
HSL	hsl(233, 54%, 42%)
HSV	hsv(233, 70%, 65%)
CMYK	cmyk(70.3%, 62.4%, 0%, 35.3%)
CIE-LAB	lab(31.38, 30.07, -57.11)
CIE-LCH	lch(31.38, 64.54, 297.77°)
OKLab	oklab(42.04% 0.005 -0.1648)
OKLCH	oklch(42.04% 0.165 271.7)
XYZ	xyz(9.7785, 6.8139, 36.3899)
Luminance	0.0682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EA5 #A59831

analogous

#3178A5 #313EA5 #5E31A5

triadic

#313EA5 #A5313E #3EA531

tetradic

#313EA5 #A53178 #A59831 #31A55E

square

#313EA5 #A53178 #A59831 #31A55E

split-complementary

#313EA5 #A55E31 #78A531

monochromatic

#151B47 #232C76 #313EA5 #4A58C9 #7984D7

Accessibility & contrast

On white

8.89

#313EA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#313EA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EA5

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EA5	#FFFFFF	#000000	##FFFFFF
##313EA5	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA8

Deuteranopia (green-blind)

#0045A3

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313ea5;
/* rgb */ color: rgb(49, 62, 165);
/* oklch */ color: oklch(42.0% 0.165 271.7);

Tailwind

colors: {
  custom: {
    50: '#7973c1',
    500: '#313ea5',
    950: '#000000',
  },
}

SCSS

$custom: #313ea5;
$custom-light: #7973c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313ea5",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 165
  },
  "hsl": {
    "h": 233.276,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42036,
    "c": 0.16485,
    "h": 271.7
  },
  "luminance": 0.06815
}

Semantic roles & 50–950 ramp

primary

#313EA5

secondary

#C0B772

accent

#CD4ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313EA5

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

Preview Lab → · Contrast checker → · Palette generator →