#313F9F#313F9F

#313F9F is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.155 H 271.6°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#313F9F
RGB	rgb(49, 63, 159)
HSL	hsl(232, 53%, 41%)
HSV	hsv(232, 69%, 62%)
CMYK	cmyk(69.2%, 60.4%, 0%, 37.6%)
CIE-LAB	lab(31.14, 27.22, -53.88)
CIE-LCH	lch(31.14, 60.36, 296.80°)
OKLab	oklab(41.7% 0.0043 -0.1553)
OKLCH	oklch(41.7% 0.155 271.6)
XYZ	xyz(9.3000, 6.7103, 33.5993)
Luminance	0.0671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F9F #9F9131

analogous

#31769F #313F9F #5A319F

triadic

#313F9F #9F313F #3F9F31

tetradic

#313F9F #9F3176 #9F9131 #319F5A

square

#313F9F #9F3176 #9F9131 #319F5A

split-complementary

#313F9F #9F5A31 #769F31

monochromatic

#141A41 #232C70 #313F9F #4757C6 #7682D5

Accessibility & contrast

On white

8.97

#313F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#313F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F9F

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F9F	#FFFFFF	#000000	##FFFFFF
##313F9F	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA2

Deuteranopia (green-blind)

#00449D

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313f9f;
/* rgb */ color: rgb(49, 63, 159);
/* oklch */ color: oklch(41.7% 0.155 271.6);

Tailwind

colors: {
  custom: {
    50: '#7774bc',
    500: '#313f9f',
    950: '#000000',
  },
}

SCSS

$custom: #313f9f;
$custom-light: #7774bc;
$custom-dark: #000000;

JSON

{
  "hex": "#313f9f",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 159
  },
  "hsl": {
    "h": 232.364,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.41703,
    "c": 0.15536,
    "h": 271.6
  },
  "luminance": 0.06711
}

Semantic roles & 50–950 ramp

primary

#313F9F

secondary

#BDB36F

accent

#CA4CDC

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313F9F

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

Preview Lab → · Contrast checker → · Palette generator →