#313BB2#313BB2

#313BB2 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.186 H 271.9°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#313BB2
RGB	rgb(49, 59, 178)
HSL	hsl(235, 57%, 45%)
HSV	hsv(235, 72%, 70%)
CMYK	cmyk(72.5%, 66.9%, 0%, 30.2%)
CIE-LAB	lab(31.79, 36.65, -64.20)
CIE-LCH	lch(31.79, 73.93, 299.72°)
OKLab	oklab(42.69% 0.0063 -0.1856)
OKLCH	oklch(42.69% 0.186 271.9)
XYZ	xyz(10.8638, 6.9942, 42.8883)
Luminance	0.0699 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313BB2 #B2A831

analogous

#317CB2 #313BB2 #6831B2

triadic

#313BB2 #B2313B #3BB231

tetradic

#313BB2 #B2317C #B2A831 #31B268

square

#313BB2 #B2317C #B2A831 #31B268

split-complementary

#313BB2 #B26831 #7CB231

monochromatic

#171B52 #242B82 #313BB2 #515BCF #8188DC

Accessibility & contrast

On white

8.75

#313BB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#313BB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BB2

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BB2	#FFFFFF	#000000	##FFFFFF
##313BB2	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B6

Deuteranopia (green-blind)

#0045B0

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #313bb2;
/* rgb */ color: rgb(49, 59, 178);
/* oklch */ color: oklch(42.7% 0.186 271.9);

Tailwind

colors: {
  custom: {
    50: '#7c71ca',
    500: '#313bb2',
    950: '#000000',
  },
}

SCSS

$custom: #313bb2;
$custom-light: #7c71ca;
$custom-dark: #000000;

JSON

{
  "hex": "#313bb2",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 178
  },
  "hsl": {
    "h": 235.349,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42692,
    "c": 0.18572,
    "h": 271.9
  },
  "luminance": 0.06995
}

Semantic roles & 50–950 ramp

primary

#313BB2

secondary

#C5C079

accent

#D448E0

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313BB2

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

Preview Lab → · Contrast checker → · Palette generator →