#31497B#31497B

#31497B is a dark, moderate blue. Relative luminance 0.068; OKLCH L 41.1% C 0.089 H 263.6°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#31497B
RGB	rgb(49, 73, 123)
HSL	hsl(221, 43%, 34%)
HSV	hsv(221, 60%, 48%)
CMYK	cmyk(60.2%, 40.7%, 0%, 51.8%)
CIE-LAB	lab(31.46, 7.23, -31.25)
CIE-LCH	lch(31.46, 32.08, 283.03°)
OKLab	oklab(41.15% -0.01 -0.0887)
OKLCH	oklch(41.15% 0.089 263.6)
XYZ	xyz(7.2231, 6.8475, 19.6761)
Luminance	0.0685 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31497B #7B6331

analogous

#316E7B #31497B #3E317B

triadic

#31497B #7B3149 #497B31

tetradic

#31497B #7B316E #7B6331 #317B3E

square

#31497B #7B316E #7B6331 #317B3E

split-complementary

#31497B #7B3E31 #6E7B31

monochromatic

#0E1523 #202F4F #31497B #4263A7 #6583C2

Accessibility & contrast

On white

8.86

#31497B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#31497B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31497B

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31497B	#FFFFFF	#000000	##FFFFFF
##31497B	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344E7D

Deuteranopia (green-blind)

#2A477A

Tritanopia (blue-blind)

#00545C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #31497b;
/* rgb */ color: rgb(49, 73, 123);
/* oklch */ color: oklch(41.1% 0.089 263.6);

Tailwind

colors: {
  custom: {
    50: '#707ba1',
    500: '#31497b',
    950: '#000000',
  },
}

SCSS

$custom: #31497b;
$custom-light: #707ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#31497b",
  "rgb": {
    "r": 49,
    "g": 73,
    "b": 123
  },
  "hsl": {
    "h": 220.541,
    "s": 43.023,
    "l": 33.725
  },
  "oklch": {
    "l": 0.41147,
    "c": 0.08923,
    "h": 263.6
  },
  "luminance": 0.06848
}

Semantic roles & 50–950 ramp

primary

#31497B

secondary

#A9915F

accent

#AA55D3

background

#F7F7F9

surface

#EDEDF2

border

#C8C8CC

text

#08090F

muted

#7B7B7E

Preview Lab

Preview with #31497B

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

Preview Lab → · Contrast checker → · Palette generator →