#31409B#31409B

#31409B is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.6% C 0.148 H 271.3°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#31409B
RGB	rgb(49, 64, 155)
HSL	hsl(232, 52%, 40%)
HSV	hsv(232, 68%, 61%)
CMYK	cmyk(68.4%, 58.7%, 0%, 39.2%)
CIE-LAB	lab(31.08, 25.09, -51.55)
CIE-LCH	lch(31.08, 57.33, 295.95°)
OKLab	oklab(41.56% 0.0034 -0.1484)
OKLCH	oklch(41.56% 0.148 271.3)
XYZ	xyz(9.0144, 6.6855, 31.8194)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31409B #9B8C31

analogous

#31759B #31409B #57319B

triadic

#31409B #9B3140 #409B31

tetradic

#31409B #9B3175 #9B8C31 #319B57

square

#31409B #9B3175 #9B8C31 #319B57

split-complementary

#31409B #9B5731 #759B31

monochromatic

#141A3E #222D6D #31409B #4557C4 #7381D3

Accessibility & contrast

On white

8.99

#31409B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#31409B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31409B

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31409B	#FFFFFF	#000000	##FFFFFF
##31409B	1.00	8.99	2.34	8.99
#FFFFFF	8.99	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9E

Deuteranopia (green-blind)

#004499

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #31409b;
/* rgb */ color: rgb(49, 64, 155);
/* oklch */ color: oklch(41.6% 0.148 271.3);

Tailwind

colors: {
  custom: {
    50: '#7674b9',
    500: '#31409b',
    950: '#000000',
  },
}

SCSS

$custom: #31409b;
$custom-light: #7674b9;
$custom-dark: #000000;

JSON

{
  "hex": "#31409b",
  "rgb": {
    "r": 49,
    "g": 64,
    "b": 155
  },
  "hsl": {
    "h": 231.509,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.41559,
    "c": 0.14848,
    "h": 271.3
  },
  "luminance": 0.06686
}

Semantic roles & 50–950 ramp

primary

#31409B

secondary

#BBB06D

accent

#C74CDB

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #31409B

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

Preview Lab → · Contrast checker → · Palette generator →