#313FA1#313FA1

#313FA1 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.9% C 0.158 H 271.5°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#313FA1
RGB	rgb(49, 63, 161)
HSL	hsl(233, 53%, 41%)
HSV	hsv(233, 70%, 63%)
CMYK	cmyk(69.6%, 60.9%, 0%, 36.9%)
CIE-LAB	lab(31.30, 27.95, -54.82)
CIE-LCH	lch(31.30, 61.54, 297.02°)
OKLab	oklab(41.88% 0.0042 -0.1581)
OKLCH	oklch(41.88% 0.158 271.5)
XYZ	xyz(9.4750, 6.7803, 34.5207)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313FA1 #A19331

analogous

#3177A1 #313FA1 #5B31A1

triadic

#313FA1 #A1313F #3FA131

tetradic

#313FA1 #A13177 #A19331 #31A15B

square

#313FA1 #A13177 #A19331 #31A15B

split-complementary

#313FA1 #A15B31 #77A131

monochromatic

#141A43 #232D72 #313FA1 #4858C7 #7783D6

Accessibility & contrast

On white

8.91

#313FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#313FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313FA1

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313FA1	#FFFFFF	#000000	##FFFFFF
##313FA1	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)

#004FA4

Deuteranopia (green-blind)

#00459F

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313fa1;
/* rgb */ color: rgb(49, 63, 161);
/* oklch */ color: oklch(41.9% 0.158 271.5);

Tailwind

colors: {
  custom: {
    50: '#7874be',
    500: '#313fa1',
    950: '#000000',
  },
}

SCSS

$custom: #313fa1;
$custom-light: #7874be;
$custom-dark: #000000;

JSON

{
  "hex": "#313fa1",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 161
  },
  "hsl": {
    "h": 232.5,
    "s": 53.333,
    "l": 41.176
  },
  "oklch": {
    "l": 0.41875,
    "c": 0.15813,
    "h": 271.5
  },
  "luminance": 0.06781
}

Semantic roles & 50–950 ramp

primary

#313FA1

secondary

#BEB470

accent

#CB4BDD

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313FA1

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

Preview Lab → · Contrast checker → · Palette generator →