#313FAE#313FAE

#313FAE is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.176 H 271.3°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#313FAE
RGB	rgb(49, 63, 174)
HSL	hsl(233, 56%, 44%)
HSV	hsv(233, 72%, 68%)
CMYK	cmyk(71.8%, 63.8%, 0%, 31.8%)
CIE-LAB	lab(32.40, 32.67, -60.83)
CIE-LCH	lch(32.40, 69.05, 298.24°)
OKLab	oklab(43.03% 0.0039 -0.1757)
OKLCH	oklch(43.03% 0.176 271.3)
XYZ	xyz(10.6815, 7.2629, 40.8751)
Luminance	0.0726 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.11

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313FAE #AEA031

analogous

#317DAE #313FAE #6131AE

triadic

#313FAE #AE313F #3FAE31

tetradic

#313FAE #AE317D #AEA031 #31AE61

square

#313FAE #AE317D #AEA031 #31AE61

split-complementary

#313FAE #AE6131 #7DAE31

monochromatic

#161C4E #242E7E #313FAE #4F5DCD #7F89DB

Accessibility & contrast

On white

8.56

#313FAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#313FAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313FAE

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313FAE	#FFFFFF	#000000	##FFFFFF
##313FAE	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B2

Deuteranopia (green-blind)

#0046AC

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #313fae;
/* rgb */ color: rgb(49, 63, 174);
/* oklch */ color: oklch(43.0% 0.176 271.3);

Tailwind

colors: {
  custom: {
    50: '#7b74c7',
    500: '#313fae',
    950: '#000000',
  },
}

SCSS

$custom: #313fae;
$custom-light: #7b74c7;
$custom-dark: #000000;

JSON

{
  "hex": "#313fae",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 174
  },
  "hsl": {
    "h": 233.28,
    "s": 56.054,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43025,
    "c": 0.17575,
    "h": 271.3
  },
  "luminance": 0.07264
}

Semantic roles & 50–950 ramp

primary

#313FAE

secondary

#C4BB77

accent

#CE48DF

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313FAE

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

Preview Lab → · Contrast checker → · Palette generator →