#31599D#31599D

#31599D is a mid, moderate blue. Relative luminance 0.102; OKLCH L 47.1% C 0.119 H 260.3°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#31599D
RGB	rgb(49, 89, 157)
HSL	hsl(218, 52%, 40%)
HSV	hsv(218, 69%, 62%)
CMYK	cmyk(68.8%, 43.3%, 0%, 38.4%)
CIE-LAB	lab(38.25, 9.24, -41.20)
CIE-LCH	lch(38.25, 42.22, 282.64°)
OKLab	oklab(47.06% -0.02 -0.1176)
OKLCH	oklch(47.06% 0.119 260.3)
XYZ	xyz(10.9226, 10.2309, 33.2909)
Luminance	0.1023 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31599D #9D7531

analogous

#318F9D #31599D #3F319D

triadic

#31599D #9D3159 #599D31

tetradic

#31599D #9D318F #9D7531 #319D3F

square

#31599D #9D318F #9D7531 #319D3F

split-complementary

#31599D #9D3F31 #8F9D31

monochromatic

#142440 #223F6E #31599D #4675C5 #7598D4

Accessibility & contrast

On white

6.89

#31599D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#31599D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #31599D

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31599D	#FFFFFF	#000000	##FFFFFF
##31599D	1.00	6.89	3.05	6.89
#FFFFFF	6.89	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#395FA0

Deuteranopia (green-blind)

#27559C

Tritanopia (blue-blind)

#006973

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #31599d;
/* rgb */ color: rgb(49, 89, 157);
/* oklch */ color: oklch(47.1% 0.119 260.3);

Tailwind

colors: {
  custom: {
    50: '#7687ba',
    500: '#31599d',
    950: '#000000',
  },
}

SCSS

$custom: #31599d;
$custom-light: #7687ba;
$custom-dark: #000000;

JSON

{
  "hex": "#31599d",
  "rgb": {
    "r": 49,
    "g": 89,
    "b": 157
  },
  "hsl": {
    "h": 217.778,
    "s": 52.427,
    "l": 40.392
  },
  "oklch": {
    "l": 0.47056,
    "c": 0.11931,
    "h": 260.3
  },
  "luminance": 0.10232
}

Semantic roles & 50–950 ramp

primary

#31599D

secondary

#BC9F6E

accent

#A74CDC

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #31599D

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

Preview Lab → · Contrast checker → · Palette generator →