#313EAA#313EAA

#313EAA is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.172 H 271.6°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#313EAA
RGB	rgb(49, 62, 170)
HSL	hsl(234, 55%, 43%)
HSV	hsv(234, 71%, 67%)
CMYK	cmyk(71.2%, 63.5%, 0%, 33.3%)
CIE-LAB	lab(31.81, 31.88, -59.41)
CIE-LCH	lch(31.81, 67.42, 298.22°)
OKLab	oklab(42.48% 0.0048 -0.1715)
OKLCH	oklch(42.48% 0.172 271.6)
XYZ	xyz(10.2425, 6.9995, 38.8337)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EAA #AA9D31

analogous

#317AAA #313EAA #6131AA

triadic

#313EAA #AA313E #3EAA31

tetradic

#313EAA #AA317A #AA9D31 #31AA61

square

#313EAA #AA317A #AA9D31 #31AA61

split-complementary

#313EAA #AA6131 #7AAA31

monochromatic

#161B4B #232D7A #313EAA #4D5ACC #7C86D9

Accessibility & contrast

On white

8.75

#313EAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#313EAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EAA

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EAA	#FFFFFF	#000000	##FFFFFF
##313EAA	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AD

Deuteranopia (green-blind)

#0045A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #313eaa;
/* rgb */ color: rgb(49, 62, 170);
/* oklch */ color: oklch(42.5% 0.172 271.6);

Tailwind

colors: {
  custom: {
    50: '#7a73c4',
    500: '#313eaa',
    950: '#000000',
  },
}

SCSS

$custom: #313eaa;
$custom-light: #7a73c4;
$custom-dark: #000000;

JSON

{
  "hex": "#313eaa",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 170
  },
  "hsl": {
    "h": 233.554,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42482,
    "c": 0.17162,
    "h": 271.6
  },
  "luminance": 0.07
}

Semantic roles & 50–950 ramp

primary

#313EAA

secondary

#C2BA75

accent

#CF49DF

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #313EAA

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

Preview Lab → · Contrast checker → · Palette generator →