#313AA5#313AA5

#313AA5 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.3% C 0.170 H 272.7°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#313AA5
RGB	rgb(49, 58, 165)
HSL	hsl(235, 54%, 42%)
HSV	hsv(235, 70%, 65%)
CMYK	cmyk(70.3%, 64.8%, 0%, 35.3%)
CIE-LAB	lab(30.39, 32.66, -58.73)
CIE-LCH	lch(30.39, 67.19, 299.08°)
OKLab	oklab(41.31% 0.008 -0.1696)
OKLCH	oklch(41.31% 0.17 272.7)
XYZ	xyz(9.5689, 6.3948, 36.3200)
Luminance	0.0640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313AA5 #A59C31

analogous

#3174A5 #313AA5 #6231A5

triadic

#313AA5 #A5313A #3AA531

tetradic

#313AA5 #A53174 #A59C31 #31A562

square

#313AA5 #A53174 #A59C31 #31A562

split-complementary

#313AA5 #A56231 #74A531

monochromatic

#151947 #232976 #313AA5 #4A54C9 #7980D7

Accessibility & contrast

On white

9.21

#313AA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#313AA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AA5

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AA5	#FFFFFF	#000000	##FFFFFF
##313AA5	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA8

Deuteranopia (green-blind)

#0042A3

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313aa5;
/* rgb */ color: rgb(49, 58, 165);
/* oklch */ color: oklch(41.3% 0.170 272.7);

Tailwind

colors: {
  custom: {
    50: '#7970c1',
    500: '#313aa5',
    950: '#000000',
  },
}

SCSS

$custom: #313aa5;
$custom-light: #7970c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313aa5",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 165
  },
  "hsl": {
    "h": 235.345,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41307,
    "c": 0.16976,
    "h": 272.7
  },
  "luminance": 0.06396
}

Semantic roles & 50–950 ramp

primary

#313AA5

secondary

#C0BA72

accent

#D24ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313AA5

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

Preview Lab → · Contrast checker → · Palette generator →