#313BA1#313BA1

#313BA1 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.1% C 0.163 H 272.6°. Best body text is #FFFFFF at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#313BA1
RGB	rgb(49, 59, 161)
HSL	hsl(235, 53%, 41%)
HSV	hsv(235, 70%, 63%)
CMYK	cmyk(69.6%, 63.4%, 0%, 36.9%)
CIE-LAB	lab(30.29, 30.57, -56.48)
CIE-LCH	lch(30.29, 64.22, 298.43°)
OKLab	oklab(41.13% 0.0074 -0.163)
OKLCH	oklch(41.13% 0.163 272.6)
XYZ	xyz(9.2615, 6.3532, 34.4495)
Luminance	0.0635 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313BA1 #A19731

analogous

#3173A1 #313BA1 #5F31A1

triadic

#313BA1 #A1313B #3BA131

tetradic

#313BA1 #A13173 #A19731 #31A15F

square

#313BA1 #A13173 #A19731 #31A15F

split-complementary

#313BA1 #A15F31 #73A131

monochromatic

#141943 #232A72 #313BA1 #4853C7 #777FD6

Accessibility & contrast

On white

9.25

#313BA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#313BA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BA1

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BA1	#FFFFFF	#000000	##FFFFFF
##313BA1	1.00	9.25	2.27	9.25
#FFFFFF	9.25	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #313ba1;
/* rgb */ color: rgb(49, 59, 161);
/* oklch */ color: oklch(41.1% 0.163 272.6);

Tailwind

colors: {
  custom: {
    50: '#7871be',
    500: '#313ba1',
    950: '#000000',
  },
}

SCSS

$custom: #313ba1;
$custom-light: #7871be;
$custom-dark: #000000;

JSON

{
  "hex": "#313ba1",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 161
  },
  "hsl": {
    "h": 234.643,
    "s": 53.333,
    "l": 41.176
  },
  "oklch": {
    "l": 0.41126,
    "c": 0.16314,
    "h": 272.6
  },
  "luminance": 0.06354
}

Semantic roles & 50–950 ramp

primary

#313BA1

secondary

#BEB770

accent

#D04BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313BA1

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

Preview Lab → · Contrast checker → · Palette generator →