#313EA9#313EA9

#313EA9 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.170 H 271.6°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#313EA9
RGB	rgb(49, 62, 169)
HSL	hsl(234, 55%, 43%)
HSV	hsv(234, 71%, 66%)
CMYK	cmyk(71%, 63.3%, 0%, 33.7%)
CIE-LAB	lab(31.72, 31.52, -58.95)
CIE-LCH	lch(31.72, 66.85, 298.13°)
OKLab	oklab(42.39% 0.0048 -0.1702)
OKLCH	oklch(42.39% 0.17 271.6)
XYZ	xyz(10.1483, 6.9618, 38.3374)
Luminance	0.0696 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EA9 #A99C31

analogous

#317AA9 #313EA9 #6031A9

triadic

#313EA9 #A9313E #3EA931

tetradic

#313EA9 #A9317A #A99C31 #31A960

square

#313EA9 #A9317A #A99C31 #31A960

split-complementary

#313EA9 #A96031 #7AA931

monochromatic

#151B4A #232D7A #313EA9 #4C5ACB #7C86D9

Accessibility & contrast

On white

8.78

#313EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#313EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EA9

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EA9	#FFFFFF	#000000	##FFFFFF
##313EA9	1.00	8.78	2.39	8.78
#FFFFFF	8.78	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AC

Deuteranopia (green-blind)

#0045A7

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #313ea9;
/* rgb */ color: rgb(49, 62, 169);
/* oklch */ color: oklch(42.4% 0.170 271.6);

Tailwind

colors: {
  custom: {
    50: '#7a73c3',
    500: '#313ea9',
    950: '#000000',
  },
}

SCSS

$custom: #313ea9;
$custom-light: #7a73c3;
$custom-dark: #000000;

JSON

{
  "hex": "#313ea9",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 169
  },
  "hsl": {
    "h": 233.5,
    "s": 55.046,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42393,
    "c": 0.17027,
    "h": 271.6
  },
  "luminance": 0.06963
}

Semantic roles & 50–950 ramp

primary

#313EA9

secondary

#C1B974

accent

#CE49DE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #313EA9

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

Preview Lab → · Contrast checker → · Palette generator →