#313BC9#313BC9

#313BC9 is a dark, highly saturated blue. Relative luminance 0.080; OKLCH L 44.9% C 0.215 H 271.0°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#313BC9
RGB	rgb(49, 59, 201)
HSL	hsl(236, 61%, 49%)
HSV	hsv(236, 76%, 79%)
CMYK	cmyk(75.6%, 70.6%, 0%, 21.2%)
CIE-LAB	lab(33.98, 44.62, -74.16)
CIE-LCH	lch(33.98, 86.55, 301.04°)
OKLab	oklab(44.93% 0.0037 -0.2147)
OKLCH	oklch(44.93% 0.215 271)
XYZ	xyz(13.3696, 7.9965, 56.0859)
Luminance	0.0800 (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

#313BC9 #C9BF31

analogous

#3187C9 #313BC9 #7331C9

triadic

#313BC9 #C9313B #3BC931

tetradic

#313BC9 #C93187 #C9BF31 #31C973

square

#313BC9 #C93187 #C9BF31 #31C973

split-complementary

#313BC9 #C97331 #87C931

monochromatic

#191E67 #252D98 #313BC9 #5F67D8 #9096E4

Accessibility & contrast

On white

8.08

#313BC9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#313BC9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BC9

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BC9	#FFFFFF	#000000	##FFFFFF
##313BC9	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CD

Deuteranopia (green-blind)

#0048C6

Tritanopia (blue-blind)

#00637E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #313bc9;
/* rgb */ color: rgb(49, 59, 201);
/* oklch */ color: oklch(44.9% 0.215 271.0);

Tailwind

colors: {
  custom: {
    50: '#8172db',
    500: '#313bc9',
    950: '#000000',
  },
}

SCSS

$custom: #313bc9;
$custom-light: #8172db;
$custom-dark: #000000;

JSON

{
  "hex": "#313bc9",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 201
  },
  "hsl": {
    "h": 236.053,
    "s": 60.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.4493,
    "c": 0.2147,
    "h": 271
  },
  "luminance": 0.07998
}

Semantic roles & 50–950 ramp

primary

#313BC9

secondary

#CFCA87

accent

#D944E4

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #313BC9

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

Preview Lab → · Contrast checker → · Palette generator →