#313DA3#313DA3

#313DA3 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.163 H 272.0°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#313DA3
RGB	rgb(49, 61, 163)
HSL	hsl(234, 54%, 42%)
HSV	hsv(234, 70%, 64%)
CMYK	cmyk(69.9%, 62.6%, 0%, 36.1%)
CIE-LAB	lab(30.96, 29.99, -56.59)
CIE-LCH	lch(30.96, 64.04, 297.92°)
OKLab	oklab(41.67% 0.0058 -0.1633)
OKLCH	oklch(41.67% 0.163 272)
XYZ	xyz(9.5440, 6.6339, 35.4207)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DA3 #A39731

analogous

#3176A3 #313DA3 #5E31A3

triadic

#313DA3 #A3313D #3DA331

tetradic

#313DA3 #A33176 #A39731 #31A35E

square

#313DA3 #A33176 #A39731 #31A35E

split-complementary

#313DA3 #A35E31 #76A331

monochromatic

#151A45 #232B74 #313DA3 #4956C8 #7882D6

Accessibility & contrast

On white

9.02

#313DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#313DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DA3

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DA3	#FFFFFF	#000000	##FFFFFF
##313DA3	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0044A1

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313da3;
/* rgb */ color: rgb(49, 61, 163);
/* oklch */ color: oklch(41.7% 0.163 272.0);

Tailwind

colors: {
  custom: {
    50: '#7872bf',
    500: '#313da3',
    950: '#000000',
  },
}

SCSS

$custom: #313da3;
$custom-light: #7872bf;
$custom-dark: #000000;

JSON

{
  "hex": "#313da3",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 163
  },
  "hsl": {
    "h": 233.684,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41673,
    "c": 0.16338,
    "h": 272
  },
  "luminance": 0.06635
}

Semantic roles & 50–950 ramp

primary

#313DA3

secondary

#BFB771

accent

#CE4BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313DA3

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

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