#313A9A#313A9A

#313A9A is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.155 H 273.1°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#313A9A
RGB	rgb(49, 58, 154)
HSL	hsl(235, 52%, 40%)
HSV	hsv(235, 68%, 60%)
CMYK	cmyk(68.2%, 62.3%, 0%, 39.6%)
CIE-LAB	lab(29.44, 28.69, -53.61)
CIE-LCH	lch(29.44, 60.80, 298.16°)
OKLab	oklab(40.32% 0.0085 -0.1546)
OKLCH	oklch(40.32% 0.155 273.1)
XYZ	xyz(8.6105, 6.0114, 31.2721)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A9A #9A9131

analogous

#316F9A #313A9A #5C319A

triadic

#313A9A #9A313A #3A9A31

tetradic

#313A9A #9A316F #9A9131 #319A5C

square

#313A9A #9A316F #9A9131 #319A5C

split-complementary

#313A9A #9A5C31 #6F9A31

monochromatic

#13173D #22296C #313A9A #454FC4 #737BD2

Accessibility & contrast

On white

9.54

#313A9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#313A9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A9A

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A9A	#FFFFFF	#000000	##FFFFFF
##313A9A	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9D

Deuteranopia (green-blind)

#004198

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #313a9a;
/* rgb */ color: rgb(49, 58, 154);
/* oklch */ color: oklch(40.3% 0.155 273.1);

Tailwind

colors: {
  custom: {
    50: '#7770b9',
    500: '#313a9a',
    950: '#000000',
  },
}

SCSS

$custom: #313a9a;
$custom-light: #7770b9;
$custom-dark: #000000;

JSON

{
  "hex": "#313a9a",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 154
  },
  "hsl": {
    "h": 234.857,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40318,
    "c": 0.15479,
    "h": 273.1
  },
  "luminance": 0.06012
}

Semantic roles & 50–950 ramp

primary

#313A9A

secondary

#BAB46C

accent

#CF4DDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #313A9A

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

Preview Lab → · Contrast checker → · Palette generator →