#313DAA#313DAA

#313DAA is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.173 H 271.8°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#313DAA
RGB	rgb(49, 61, 170)
HSL	hsl(234, 55%, 43%)
HSV	hsv(234, 71%, 67%)
CMYK	cmyk(71.2%, 64.1%, 0%, 33.3%)
CIE-LAB	lab(31.56, 32.52, -59.81)
CIE-LCH	lch(31.56, 68.08, 298.53°)
OKLab	oklab(42.3% 0.0055 -0.1727)
OKLCH	oklch(42.3% 0.173 271.8)
XYZ	xyz(10.1886, 6.8917, 38.8157)
Luminance	0.0689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.37

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DAA #AA9E31

analogous

#3179AA #313DAA #6231AA

triadic

#313DAA #AA313D #3DAA31

tetradic

#313DAA #AA3179 #AA9E31 #31AA62

square

#313DAA #AA3179 #AA9E31 #31AA62

split-complementary

#313DAA #AA6231 #79AA31

monochromatic

#161B4B #232C7A #313DAA #4D59CC #7C85D9

Accessibility & contrast

On white

8.83

#313DAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#313DAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DAA

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DAA	#FFFFFF	#000000	##FFFFFF
##313DAA	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AD

Deuteranopia (green-blind)

#0045A8

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313daa;
/* rgb */ color: rgb(49, 61, 170);
/* oklch */ color: oklch(42.3% 0.173 271.8);

Tailwind

colors: {
  custom: {
    50: '#7a72c4',
    500: '#313daa',
    950: '#000000',
  },
}

SCSS

$custom: #313daa;
$custom-light: #7a72c4;
$custom-dark: #000000;

JSON

{
  "hex": "#313daa",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 170
  },
  "hsl": {
    "h": 234.05,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42301,
    "c": 0.17283,
    "h": 271.8
  },
  "luminance": 0.06893
}

Semantic roles & 50–950 ramp

primary

#313DAA

secondary

#C2BA75

accent

#D049DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #313DAA

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

Preview Lab → · Contrast checker → · Palette generator →