#313A84#313A84

#313A84 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.5% C 0.123 H 273.9°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#313A84
RGB	rgb(49, 58, 132)
HSL	hsl(233, 46%, 35%)
HSV	hsv(233, 63%, 52%)
CMYK	cmyk(62.9%, 56.1%, 0%, 48.2%)
CIE-LAB	lab(27.69, 20.68, -42.89)
CIE-LCH	lch(27.69, 47.61, 295.74°)
OKLab	oklab(38.47% 0.0083 -0.123)
OKLCH	oklch(38.47% 0.123 273.9)
XYZ	xyz(6.9432, 5.3445, 22.4910)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A84 #847B31

analogous

#316384 #313A84 #513184

triadic

#313A84 #84313A #3A8431

tetradic

#313A84 #843163 #847B31 #318451

square

#313A84 #843163 #847B31 #318451

split-complementary

#313A84 #845131 #638431

monochromatic

#10132B #202657 #313A84 #424EB1 #6873C7

Accessibility & contrast

On white

10.15

#313A84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#313A84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A84

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A84	#FFFFFF	#000000	##FFFFFF
##313A84	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064587

Deuteranopia (green-blind)

#003E82

Tritanopia (blue-blind)

#004B59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313a84;
/* rgb */ color: rgb(49, 58, 132);
/* oklch */ color: oklch(38.5% 0.123 273.9);

Tailwind

colors: {
  custom: {
    50: '#7270a8',
    500: '#313a84',
    950: '#000000',
  },
}

SCSS

$custom: #313a84;
$custom-light: #7270a8;
$custom-dark: #000000;

JSON

{
  "hex": "#313a84",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 132
  },
  "hsl": {
    "h": 233.494,
    "s": 45.856,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38471,
    "c": 0.12333,
    "h": 273.9
  },
  "luminance": 0.05345
}

Semantic roles & 50–950 ramp

primary

#313A84

secondary

#AEA662

accent

#C752D6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #313A84

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

Preview Lab → · Contrast checker → · Palette generator →