#313C9D#313C9D

#313C9D is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.156 H 272.5°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#313C9D
RGB	rgb(49, 60, 157)
HSL	hsl(234, 52%, 40%)
HSV	hsv(234, 69%, 62%)
CMYK	cmyk(68.8%, 61.8%, 0%, 38.4%)
CIE-LAB	lab(30.20, 28.47, -54.19)
CIE-LCH	lch(30.20, 61.21, 297.71°)
OKLab	oklab(40.96% 0.0068 -0.1563)
OKLCH	oklch(40.96% 0.156 272.5)
XYZ	xyz(8.9662, 6.3182, 32.6388)
Luminance	0.0632 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C9D #9D9231

analogous

#31729D #313C9D #5C319D

triadic

#313C9D #9D313C #3C9D31

tetradic

#313C9D #9D3172 #9D9231 #319D5C

square

#313C9D #9D3172 #9D9231 #319D5C

split-complementary

#313C9D #9D5C31 #729D31

monochromatic

#141840 #222A6E #313C9D #4653C5 #757ED4

Accessibility & contrast

On white

9.28

#313C9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#313C9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C9D

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C9D	#FFFFFF	#000000	##FFFFFF
##313C9D	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA0

Deuteranopia (green-blind)

#00429B

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #313c9d;
/* rgb */ color: rgb(49, 60, 157);
/* oklch */ color: oklch(41.0% 0.156 272.5);

Tailwind

colors: {
  custom: {
    50: '#7771bb',
    500: '#313c9d',
    950: '#000000',
  },
}

SCSS

$custom: #313c9d;
$custom-light: #7771bb;
$custom-dark: #000000;

JSON

{
  "hex": "#313c9d",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 157
  },
  "hsl": {
    "h": 233.889,
    "s": 52.427,
    "l": 40.392
  },
  "oklch": {
    "l": 0.40958,
    "c": 0.15641,
    "h": 272.5
  },
  "luminance": 0.06319
}

Semantic roles & 50–950 ramp

primary

#313C9D

secondary

#BCB46E

accent

#CD4CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313C9D

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

Preview Lab → · Contrast checker → · Palette generator →