#313599#313599

#313599 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.3% C 0.160 H 274.5°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#313599
RGB	rgb(49, 53, 153)
HSL	hsl(238, 51%, 40%)
HSV	hsv(238, 68%, 60%)
CMYK	cmyk(68%, 65.4%, 0%, 40%)
CIE-LAB	lab(28.11, 31.59, -55.17)
CIE-LCH	lch(28.11, 63.58, 299.79°)
OKLab	oklab(39.31% 0.0126 -0.1592)
OKLCH	oklch(39.31% 0.16 274.5)
XYZ	xyz(8.2876, 5.4983, 30.7554)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313599 #999531

analogous

#316999 #313599 #613199

triadic

#313599 #993135 #359931

tetradic

#313599 #993169 #999531 #319961

square

#313599 #993169 #999531 #319961

split-complementary

#313599 #996131 #699931

monochromatic

#13153C #22256B #313599 #4449C3 #7276D2

Accessibility & contrast

On white

10.00

#313599 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#313599 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313599

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313599	#FFFFFF	#000000	##FFFFFF
##313599	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#004F62

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313599;
/* rgb */ color: rgb(49, 53, 153);
/* oklch */ color: oklch(39.3% 0.160 274.5);

Tailwind

colors: {
  custom: {
    50: '#776cb8',
    500: '#313599',
    950: '#000000',
  },
}

SCSS

$custom: #313599;
$custom-light: #776cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#313599",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 153
  },
  "hsl": {
    "h": 237.692,
    "s": 51.485,
    "l": 39.608
  },
  "oklch": {
    "l": 0.39314,
    "c": 0.15969,
    "h": 274.5
  },
  "luminance": 0.05499
}

Semantic roles & 50–950 ramp

primary

#313599

secondary

#BAB76C

accent

#D54DDB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #313599

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

Preview Lab → · Contrast checker → · Palette generator →