#313E9D#313E9D

#313E9D is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.154 H 271.9°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#313E9D
RGB	rgb(49, 62, 157)
HSL	hsl(233, 52%, 40%)
HSV	hsv(233, 69%, 62%)
CMYK	cmyk(68.8%, 60.5%, 0%, 38.4%)
CIE-LAB	lab(30.72, 27.15, -53.35)
CIE-LCH	lch(30.72, 59.86, 296.97°)
OKLab	oklab(41.34% 0.0051 -0.1538)
OKLCH	oklch(41.34% 0.154 271.9)
XYZ	xyz(9.0730, 6.5317, 32.6743)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E9D #9D9031

analogous

#31749D #313E9D #5A319D

triadic

#313E9D #9D313E #3E9D31

tetradic

#313E9D #9D3174 #9D9031 #319D5A

square

#313E9D #9D3174 #9D9031 #319D5A

split-complementary

#313E9D #9D5A31 #749D31

monochromatic

#141940 #222C6E #313E9D #4655C5 #7580D4

Accessibility & contrast

On white

9.10

#313E9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#313E9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E9D

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E9D	#FFFFFF	#000000	##FFFFFF
##313E9D	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA0

Deuteranopia (green-blind)

#00449B

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313e9d;
/* rgb */ color: rgb(49, 62, 157);
/* oklch */ color: oklch(41.3% 0.154 271.9);

Tailwind

colors: {
  custom: {
    50: '#7773bb',
    500: '#313e9d',
    950: '#000000',
  },
}

SCSS

$custom: #313e9d;
$custom-light: #7773bb;
$custom-dark: #000000;

JSON

{
  "hex": "#313e9d",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 157
  },
  "hsl": {
    "h": 232.778,
    "s": 52.427,
    "l": 40.392
  },
  "oklch": {
    "l": 0.41339,
    "c": 0.15385,
    "h": 271.9
  },
  "luminance": 0.06533
}

Semantic roles & 50–950 ramp

primary

#313E9D

secondary

#BCB26E

accent

#CB4CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313E9D

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

Preview Lab → · Contrast checker → · Palette generator →