#313CB0#313CB0

#313CB0 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.182 H 271.8°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#313CB0
RGB	rgb(49, 60, 176)
HSL	hsl(235, 56%, 44%)
HSV	hsv(235, 72%, 69%)
CMYK	cmyk(72.2%, 65.9%, 0%, 31%)
CIE-LAB	lab(31.85, 35.31, -62.92)
CIE-LCH	lch(31.85, 72.15, 299.30°)
OKLab	oklab(42.68% 0.0058 -0.1819)
OKLCH	oklch(42.68% 0.182 271.8)
XYZ	xyz(10.7163, 7.0182, 41.8558)
Luminance	0.0702 (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

#313CB0 #B0A531

analogous

#317CB0 #313CB0 #6631B0

triadic

#313CB0 #B0313C #3CB031

tetradic

#313CB0 #B0317C #B0A531 #31B066

square

#313CB0 #B0317C #B0A531 #31B066

split-complementary

#313CB0 #B06631 #7CB031

monochromatic

#161B50 #242C80 #313CB0 #505BCE #8088DC

Accessibility & contrast

On white

8.74

#313CB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#313CB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313CB0

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313CB0	#FFFFFF	#000000	##FFFFFF
##313CB0	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0045AE

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #313cb0;
/* rgb */ color: rgb(49, 60, 176);
/* oklch */ color: oklch(42.7% 0.182 271.8);

Tailwind

colors: {
  custom: {
    50: '#7b72c9',
    500: '#313cb0',
    950: '#000000',
  },
}

SCSS

$custom: #313cb0;
$custom-light: #7b72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#313cb0",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 176
  },
  "hsl": {
    "h": 234.803,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42676,
    "c": 0.18195,
    "h": 271.8
  },
  "luminance": 0.07019
}

Semantic roles & 50–950 ramp

primary

#313CB0

secondary

#C5BE78

accent

#D348E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313CB0

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

Preview Lab → · Contrast checker → · Palette generator →