#31458B#31458B

#31458B is a dark, moderate blue. Relative luminance 0.068; OKLCH L 41.3% C 0.119 H 268.8°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#31458B
RGB	rgb(49, 69, 139)
HSL	hsl(227, 48%, 37%)
HSV	hsv(227, 65%, 55%)
CMYK	cmyk(64.7%, 50.4%, 0%, 45.5%)
CIE-LAB	lab(31.28, 15.80, -41.44)
CIE-LCH	lch(31.28, 44.35, 290.87°)
OKLab	oklab(41.34% -0.0026 -0.1186)
OKLCH	oklch(41.34% 0.119 268.8)
XYZ	xyz(8.0534, 6.7726, 25.3039)
Luminance	0.0677 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31458B #8B7731

analogous

#31728B #31458B #4A318B

triadic

#31458B #8B3145 #458B31

tetradic

#31458B #8B3172 #8B7731 #318B4A

square

#31458B #8B3172 #8B7731 #318B4A

split-complementary

#31458B #8B4A31 #728B31

monochromatic

#111831 #212F5E #31458B #415BB8 #6B81CB

Accessibility & contrast

On white

8.92

#31458B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#31458B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31458B

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31458B	#FFFFFF	#000000	##FFFFFF
##31458B	1.00	8.92	2.35	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204E8E

Deuteranopia (green-blind)

#0C468A

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #31458b;
/* rgb */ color: rgb(49, 69, 139);
/* oklch */ color: oklch(41.3% 0.119 268.8);

Tailwind

colors: {
  custom: {
    50: '#7378ad',
    500: '#31458b',
    950: '#000000',
  },
}

SCSS

$custom: #31458b;
$custom-light: #7378ad;
$custom-dark: #000000;

JSON

{
  "hex": "#31458b",
  "rgb": {
    "r": 49,
    "g": 69,
    "b": 139
  },
  "hsl": {
    "h": 226.667,
    "s": 47.872,
    "l": 36.863
  },
  "oklch": {
    "l": 0.41339,
    "c": 0.11866,
    "h": 268.8
  },
  "luminance": 0.06773
}

Semantic roles & 50–950 ramp

primary

#31458B

secondary

#B2A165

accent

#B950D7

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #31458B

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

Preview Lab → · Contrast checker → · Palette generator →