#313188#313188

#313188 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.0% C 0.141 H 277.0°. Best body text is #FFFFFF at 10.91:1 contrast (WCAG AA passes).

Color values

HEX	#313188
RGB	rgb(49, 49, 136)
HSL	hsl(240, 47%, 36%)
HSV	hsv(240, 64%, 53%)
CMYK	cmyk(64%, 64%, 0%, 46.7%)
CIE-LAB	lab(25.64, 28.15, -48.71)
CIE-LCH	lch(25.64, 56.26, 300.02°)
OKLab	oklab(37.05% 0.0172 -0.1403)
OKLCH	oklch(37.05% 0.141 277)
XYZ	xyz(6.8074, 4.6266, 23.8221)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313188 #888831

analogous

#315D88 #313188 #5D3188

triadic

#313188 #883131 #318831

tetradic

#313188 #88315D #888831 #31885D

square

#313188 #88315D #888831 #31885D

split-complementary

#313188 #885D31 #5D8831

monochromatic

#11112E #21215B #313188 #4141B5 #6A6AC9

Accessibility & contrast

On white

10.91

#313188 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#313188 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313188

10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313188	#FFFFFF	#000000	##FFFFFF
##313188	1.00	10.91	1.93	10.91
#FFFFFF	10.91	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418B

Deuteranopia (green-blind)

#003986

Tritanopia (blue-blind)

#004757

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #313188;
/* rgb */ color: rgb(49, 49, 136);
/* oklch */ color: oklch(37.0% 0.141 277.0);

Tailwind

colors: {
  custom: {
    50: '#7469ab',
    500: '#313188',
    950: '#000000',
  },
}

SCSS

$custom: #313188;
$custom-light: #7469ab;
$custom-dark: #000000;

JSON

{
  "hex": "#313188",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 136
  },
  "hsl": {
    "h": 240,
    "s": 47.027,
    "l": 36.275
  },
  "oklch": {
    "l": 0.3705,
    "c": 0.14131,
    "h": 277
  },
  "luminance": 0.04627
}

Semantic roles & 50–950 ramp

primary

#313188

secondary

#B1B164

accent

#D751D7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #313188

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

Preview Lab → · Contrast checker → · Palette generator →