#313A9C#313A9C

#313A9C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.158 H 273.1°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#313A9C
RGB	rgb(49, 58, 156)
HSL	hsl(235, 52%, 40%)
HSV	hsv(235, 69%, 61%)
CMYK	cmyk(68.6%, 62.8%, 0%, 38.8%)
CIE-LAB	lab(29.61, 29.42, -54.55)
CIE-LCH	lch(29.61, 61.98, 298.34°)
OKLab	oklab(40.49% 0.0084 -0.1573)
OKLCH	oklch(40.49% 0.158 273.1)
XYZ	xyz(8.7784, 6.0786, 32.1567)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A9C #9C9331

analogous

#31709C #313A9C #5D319C

triadic

#313A9C #9C313A #3A9C31

tetradic

#313A9C #9C3170 #9C9331 #319C5D

square

#313A9C #9C3170 #9C9331 #319C5D

split-complementary

#313A9C #9C5D31 #709C31

monochromatic

#14173F #22296D #313A9C #4550C5 #747CD3

Accessibility & contrast

On white

9.48

#313A9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#313A9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A9C

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A9C	#FFFFFF	#000000	##FFFFFF
##313A9C	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9F

Deuteranopia (green-blind)

#00419A

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #313a9c;
/* rgb */ color: rgb(49, 58, 156);
/* oklch */ color: oklch(40.5% 0.158 273.1);

Tailwind

colors: {
  custom: {
    50: '#7770ba',
    500: '#313a9c',
    950: '#000000',
  },
}

SCSS

$custom: #313a9c;
$custom-light: #7770ba;
$custom-dark: #000000;

JSON

{
  "hex": "#313a9c",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 156
  },
  "hsl": {
    "h": 234.953,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.40495,
    "c": 0.15755,
    "h": 273.1
  },
  "luminance": 0.06079
}

Semantic roles & 50–950 ramp

primary

#313A9C

secondary

#BBB56D

accent

#D04CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313A9C

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

Preview Lab → · Contrast checker → · Palette generator →