#313399#313399

#313399 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.0% C 0.162 H 275.0°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#313399
RGB	rgb(49, 51, 153)
HSL	hsl(239, 51%, 40%)
HSV	hsv(239, 68%, 60%)
CMYK	cmyk(68%, 66.7%, 0%, 40%)
CIE-LAB	lab(27.63, 32.87, -55.96)
CIE-LCH	lch(27.63, 64.90, 300.43°)
OKLab	oklab(38.96% 0.0142 -0.1615)
OKLCH	oklch(38.96% 0.162 275)
XYZ	xyz(8.1983, 5.3198, 30.7256)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313399 #999731

analogous

#316799 #313399 #633199

triadic

#313399 #993133 #339931

tetradic

#313399 #993167 #999731 #319963

square

#313399 #993167 #999731 #319963

split-complementary

#313399 #996331 #679931

monochromatic

#13143C #22246B #313399 #4447C3 #7274D2

Accessibility & contrast

On white

10.17

#313399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#313399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313399

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313399	#FFFFFF	#000000	##FFFFFF
##313399	1.00	10.17	2.06	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469C

Deuteranopia (green-blind)

#003D97

Tritanopia (blue-blind)

#004E61

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313399;
/* rgb */ color: rgb(49, 51, 153);
/* oklch */ color: oklch(39.0% 0.162 275.0);

Tailwind

colors: {
  custom: {
    50: '#776bb8',
    500: '#313399',
    950: '#000000',
  },
}

SCSS

$custom: #313399;
$custom-light: #776bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#313399",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 153
  },
  "hsl": {
    "h": 238.846,
    "s": 51.485,
    "l": 39.608
  },
  "oklch": {
    "l": 0.38962,
    "c": 0.16213,
    "h": 275
  },
  "luminance": 0.05321
}

Semantic roles & 50–950 ramp

primary

#313399

secondary

#BAB86C

accent

#D84DDB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0611

muted

#7C7A80

Preview Lab

Preview with #313399

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

Preview Lab → · Contrast checker → · Palette generator →