#31599C#31599C

#31599C is a mid, moderate blue. Relative luminance 0.102; OKLCH L 47.0% C 0.118 H 260.1°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#31599C
RGB	rgb(49, 89, 156)
HSL	hsl(218, 52%, 40%)
HSV	hsv(218, 69%, 61%)
CMYK	cmyk(68.6%, 42.9%, 0%, 38.8%)
CIE-LAB	lab(38.19, 8.86, -40.69)
CIE-LCH	lch(38.19, 41.65, 282.29°)
OKLab	oklab(46.99% -0.0203 -0.1161)
OKLCH	oklch(46.99% 0.118 260.1)
XYZ	xyz(10.8376, 10.1969, 32.8431)
Luminance	0.1020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31599C #9C7431

analogous

#318E9C #31599C #3E319C

triadic

#31599C #9C3159 #599C31

tetradic

#31599C #9C318E #9C7431 #319C3E

square

#31599C #9C318E #9C7431 #319C3E

split-complementary

#31599C #9C3E31 #8E9C31

monochromatic

#14243F #223E6D #31599C #4575C5 #7498D3

Accessibility & contrast

On white

6.91

#31599C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#31599C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #31599C

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31599C	#FFFFFF	#000000	##FFFFFF
##31599C	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5F9F

Deuteranopia (green-blind)

#28559B

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #31599c;
/* rgb */ color: rgb(49, 89, 156);
/* oklch */ color: oklch(47.0% 0.118 260.1);

Tailwind

colors: {
  custom: {
    50: '#7587b9',
    500: '#31599c',
    950: '#000000',
  },
}

SCSS

$custom: #31599c;
$custom-light: #7587b9;
$custom-dark: #000000;

JSON

{
  "hex": "#31599c",
  "rgb": {
    "r": 49,
    "g": 89,
    "b": 156
  },
  "hsl": {
    "h": 217.57,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.4699,
    "c": 0.11789,
    "h": 260.1
  },
  "luminance": 0.10198
}

Semantic roles & 50–950 ramp

primary

#31599C

secondary

#BB9E6D

accent

#A64CDC

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B11

muted

#7B7C80

Preview Lab

Preview with #31599C

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

Preview Lab → · Contrast checker → · Palette generator →