#313AAA#313AAA

#313AAA is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.176 H 272.5°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#313AAA
RGB	rgb(49, 58, 170)
HSL	hsl(236, 55%, 43%)
HSV	hsv(236, 71%, 67%)
CMYK	cmyk(71.2%, 65.9%, 0%, 33.3%)
CIE-LAB	lab(30.83, 34.44, -61.00)
CIE-LCH	lch(30.83, 70.05, 299.45°)
OKLab	oklab(41.77% 0.0076 -0.1762)
OKLCH	oklch(41.77% 0.176 272.5)
XYZ	xyz(10.0329, 6.5804, 38.7638)
Luminance	0.0658 (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

#313AAA #AAA131

analogous

#3176AA #313AAA #6431AA

triadic

#313AAA #AA313A #3AAA31

tetradic

#313AAA #AA3176 #AAA131 #31AA64

square

#313AAA #AA3176 #AAA131 #31AA64

split-complementary

#313AAA #AA6431 #76AA31

monochromatic

#161A4B #232A7A #313AAA #4D56CC #7C83D9

Accessibility & contrast

On white

9.07

#313AAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#313AAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AAA

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AAA	#FFFFFF	#000000	##FFFFFF
##313AAA	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAE

Deuteranopia (green-blind)

#0043A8

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313aaa;
/* rgb */ color: rgb(49, 58, 170);
/* oklch */ color: oklch(41.8% 0.176 272.5);

Tailwind

colors: {
  custom: {
    50: '#7a70c4',
    500: '#313aaa',
    950: '#000000',
  },
}

SCSS

$custom: #313aaa;
$custom-light: #7a70c4;
$custom-dark: #000000;

JSON

{
  "hex": "#313aaa",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 170
  },
  "hsl": {
    "h": 235.537,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41769,
    "c": 0.1764,
    "h": 272.5
  },
  "luminance": 0.06581
}

Semantic roles & 50–950 ramp

primary

#313AAA

secondary

#C2BC75

accent

#D349DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313AAA

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

Preview Lab → · Contrast checker → · Palette generator →