#313DAF#313DAF

#313DAF is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.179 H 271.7°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#313DAF
RGB	rgb(49, 61, 175)
HSL	hsl(234, 56%, 44%)
HSV	hsv(234, 72%, 69%)
CMYK	cmyk(72%, 65.1%, 0%, 31.4%)
CIE-LAB	lab(32.00, 34.32, -62.08)
CIE-LCH	lch(32.00, 70.93, 298.93°)
OKLab	oklab(42.76% 0.0052 -0.1794)
OKLCH	oklch(42.76% 0.179 271.7)
XYZ	xyz(10.6706, 7.0845, 41.3542)
Luminance	0.0709 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.82

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DAF #AFA331

analogous

#317CAF #313DAF #6431AF

triadic

#313DAF #AF313D #3DAF31

tetradic

#313DAF #AF317C #AFA331 #31AF64

square

#313DAF #AF317C #AFA331 #31AF64

split-complementary

#313DAF #AF6431 #7CAF31

monochromatic

#161C4F #242C7F #313DAF #4F5BCE #7F88DB

Accessibility & contrast

On white

8.69

#313DAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#313DAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DAF

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DAF	#FFFFFF	#000000	##FFFFFF
##313DAF	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B3

Deuteranopia (green-blind)

#0045AD

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #313daf;
/* rgb */ color: rgb(49, 61, 175);
/* oklch */ color: oklch(42.8% 0.179 271.7);

Tailwind

colors: {
  custom: {
    50: '#7b72c8',
    500: '#313daf',
    950: '#000000',
  },
}

SCSS

$custom: #313daf;
$custom-light: #7b72c8;
$custom-dark: #000000;

JSON

{
  "hex": "#313daf",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 175
  },
  "hsl": {
    "h": 234.286,
    "s": 56.25,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42759,
    "c": 0.17945,
    "h": 271.7
  },
  "luminance": 0.07086
}

Semantic roles & 50–950 ramp

primary

#313DAF

secondary

#C4BD78

accent

#D148E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313DAF

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

Preview Lab → · Contrast checker → · Palette generator →