#313DAC#313DAC

#313DAC is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.175 H 271.8°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#313DAC
RGB	rgb(49, 61, 172)
HSL	hsl(234, 56%, 43%)
HSV	hsv(234, 72%, 67%)
CMYK	cmyk(71.5%, 64.5%, 0%, 32.5%)
CIE-LAB	lab(31.73, 33.24, -60.72)
CIE-LCH	lch(31.73, 69.23, 298.70°)
OKLab	oklab(42.48% 0.0054 -0.1754)
OKLCH	oklch(42.48% 0.175 271.8)
XYZ	xyz(10.3792, 6.9680, 39.8197)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.14

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DAC #ACA031

analogous

#317AAC #313DAC #6231AC

triadic

#313DAC #AC313D #3DAC31

tetradic

#313DAC #AC317A #ACA031 #31AC62

square

#313DAC #AC317A #ACA031 #31AC62

split-complementary

#313DAC #AC6231 #7AAC31

monochromatic

#161B4D #232C7C #313DAC #4E5ACC #7D86DA

Accessibility & contrast

On white

8.77

#313DAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#313DAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DAC

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DAC	#FFFFFF	#000000	##FFFFFF
##313DAC	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B0

Deuteranopia (green-blind)

#0045AA

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #313dac;
/* rgb */ color: rgb(49, 61, 172);
/* oklch */ color: oklch(42.5% 0.175 271.8);

Tailwind

colors: {
  custom: {
    50: '#7a72c6',
    500: '#313dac',
    950: '#000000',
  },
}

SCSS

$custom: #313dac;
$custom-light: #7a72c6;
$custom-dark: #000000;

JSON

{
  "hex": "#313dac",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 172
  },
  "hsl": {
    "h": 234.146,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42483,
    "c": 0.17549,
    "h": 271.8
  },
  "luminance": 0.06969
}

Semantic roles & 50–950 ramp

primary

#313DAC

secondary

#C3BB76

accent

#D049DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313DAC

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

Preview Lab → · Contrast checker → · Palette generator →