#313FBC#313FBC

#313FBC is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.3% C 0.194 H 270.9°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#313FBC
RGB	rgb(49, 63, 188)
HSL	hsl(234, 59%, 46%)
HSV	hsv(234, 74%, 74%)
CMYK	cmyk(73.9%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(33.64, 37.68, -67.09)
CIE-LCH	lch(33.64, 76.95, 299.32°)
OKLab	oklab(44.32% 0.0029 -0.194)
OKLCH	oklch(44.32% 0.194 270.9)
XYZ	xyz(12.1181, 7.8376, 48.4413)
Luminance	0.0784 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313FBC #BCAE31

analogous

#3185BC #313FBC #6931BC

triadic

#313FBC #BC313F #3FBC31

tetradic

#313FBC #BC3185 #BCAE31 #31BC69

square

#313FBC #BC3185 #BCAE31 #31BC69

split-complementary

#313FBC #BC6931 #85BC31

monochromatic

#181E5B #242F8B #313FBC #5764D3 #8890E0

Accessibility & contrast

On white

8.18

#313FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#313FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313FBC

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313FBC	#FFFFFF	#000000	##FFFFFF
##313FBC	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C0

Deuteranopia (green-blind)

#0049BA

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #313fbc;
/* rgb */ color: rgb(49, 63, 188);
/* oklch */ color: oklch(44.3% 0.194 270.9);

Tailwind

colors: {
  custom: {
    50: '#7e74d1',
    500: '#313fbc',
    950: '#000000',
  },
}

SCSS

$custom: #313fbc;
$custom-light: #7e74d1;
$custom-dark: #000000;

JSON

{
  "hex": "#313fbc",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 233.957,
    "s": 58.65,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44317,
    "c": 0.19405,
    "h": 270.9
  },
  "luminance": 0.07839
}

Semantic roles & 50–950 ramp

primary

#313FBC

secondary

#CAC27F

accent

#D246E2

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0B0814

muted

#7C7B83

Preview Lab

Preview with #313FBC

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

Preview Lab → · Contrast checker → · Palette generator →