#311EA7#311EA7

#311EA7 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.4% C 0.201 H 276.8°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#311EA7
RGB	rgb(49, 30, 167)
HSL	hsl(248, 70%, 39%)
HSV	hsv(248, 82%, 65%)
CMYK	cmyk(70.7%, 82%, 0%, 34.5%)
CIE-LAB	lab(24.86, 49.24, -69.04)
CIE-LCH	lch(24.86, 84.80, 305.50°)
OKLab	oklab(37.43% 0.0236 -0.1995)
OKLCH	oklch(37.43% 0.201 276.8)
XYZ	xyz(8.7037, 4.3707, 36.9367)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311EA7 #94A71E

analogous

#1E4FA7 #311EA7 #751EA7

triadic

#311EA7 #A7311E #1EA731

tetradic

#311EA7 #A71E4F #94A71E #1EA775

square

#311EA7 #A71E4F #94A71E #1EA775

split-complementary

#311EA7 #A7751E #4FA71E

monochromatic

#130B3F #221573 #311EA7 #422AD9 #705DE2

Accessibility & contrast

On white

11.20

#311EA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#311EA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311EA7

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311EA7	#FFFFFF	#000000	##FFFFFF
##311EA7	1.00	11.20	1.87	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AB

Deuteranopia (green-blind)

#0035A5

Tritanopia (blue-blind)

#004964

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #311ea7;
/* rgb */ color: rgb(49, 30, 167);
/* oklch */ color: oklch(37.4% 0.201 276.8);

Tailwind

colors: {
  custom: {
    50: '#7c5fc3',
    500: '#311ea7',
    950: '#000000',
  },
}

SCSS

$custom: #311ea7;
$custom-light: #7c5fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#311ea7",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 167
  },
  "hsl": {
    "h": 248.321,
    "s": 69.543,
    "l": 38.627
  },
  "oklch": {
    "l": 0.37426,
    "c": 0.2009,
    "h": 276.8
  },
  "luminance": 0.04372
}

Semantic roles & 50–950 ramp

primary

#311EA7

secondary

#B7C65B

accent

#EC3BD4

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311EA7

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

Preview Lab → · Contrast checker → · Palette generator →