#313681#313681

#313681 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.4% C 0.124 H 275.7°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#313681
RGB	rgb(49, 54, 129)
HSL	hsl(236, 45%, 35%)
HSV	hsv(236, 62%, 51%)
CMYK	cmyk(62%, 58.1%, 0%, 49.4%)
CIE-LAB	lab(26.38, 22.30, -43.15)
CIE-LCH	lch(26.38, 48.57, 297.33°)
OKLab	oklab(37.42% 0.0124 -0.1238)
OKLCH	oklch(37.42% 0.124 275.7)
XYZ	xyz(6.5470, 4.8758, 21.3607)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313681 #817C31

analogous

#315E81 #313681 #543181

triadic

#313681 #813136 #368131

tetradic

#313681 #81315E #817C31 #318154

square

#313681 #81315E #817C31 #318154

split-complementary

#313681 #815431 #5E8131

monochromatic

#0F1128 #202355 #313681 #4249AD #676DC5

Accessibility & contrast

On white

10.63

#313681 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#313681 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313681

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313681	#FFFFFF	#000000	##FFFFFF
##313681	1.00	10.63	1.98	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004284

Deuteranopia (green-blind)

#003B7F

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #313681;
/* rgb */ color: rgb(49, 54, 129);
/* oklch */ color: oklch(37.4% 0.124 275.7);

Tailwind

colors: {
  custom: {
    50: '#726da6',
    500: '#313681',
    950: '#000000',
  },
}

SCSS

$custom: #313681;
$custom-light: #726da6;
$custom-dark: #000000;

JSON

{
  "hex": "#313681",
  "rgb": {
    "r": 49,
    "g": 54,
    "b": 129
  },
  "hsl": {
    "h": 236.25,
    "s": 44.944,
    "l": 34.902
  },
  "oklch": {
    "l": 0.37415,
    "c": 0.12446,
    "h": 275.7
  },
  "luminance": 0.04876
}

Semantic roles & 50–950 ramp

primary

#313681

secondary

#ADA861

accent

#CD53D5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #313681

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

Preview Lab → · Contrast checker → · Palette generator →