#2F378F#2F378F

#2F378F is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.7% C 0.144 H 273.6°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#2F378F
RGB	rgb(47, 55, 143)
HSL	hsl(235, 51%, 37%)
HSV	hsv(235, 67%, 56%)
CMYK	cmyk(67.1%, 61.5%, 0%, 43.9%)
CIE-LAB	lab(27.63, 26.37, -49.83)
CIE-LCH	lch(27.63, 56.38, 297.89°)
OKLab	oklab(38.66% 0.0091 -0.1435)
OKLCH	oklch(38.66% 0.144 273.6)
XYZ	xyz(7.4948, 5.3192, 26.6130)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F378F #8F872F

analogous

#2F678F #2F378F #572F8F

triadic

#2F378F #8F2F37 #378F2F

tetradic

#2F378F #8F2F67 #8F872F #2F8F57

square

#2F378F #8F2F67 #8F872F #2F8F57

split-complementary

#2F378F #8F572F #678F2F

monochromatic

#111433 #202561 #2F378F #3E49BD #6A73CE

Accessibility & contrast

On white

10.17

#2F378F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#2F378F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F378F

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F378F	#FFFFFF	#000000	##FFFFFF
##2F378F	1.00	10.17	2.06	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004692

Deuteranopia (green-blind)

#003D8D

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2f378f;
/* rgb */ color: rgb(47, 55, 143);
/* oklch */ color: oklch(38.7% 0.144 273.6);

Tailwind

colors: {
  custom: {
    50: '#746db1',
    500: '#2f378f',
    950: '#000000',
  },
}

SCSS

$custom: #2f378f;
$custom-light: #746db1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f378f",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 143
  },
  "hsl": {
    "h": 235,
    "s": 50.526,
    "l": 37.255
  },
  "oklch": {
    "l": 0.38657,
    "c": 0.14383,
    "h": 273.6
  },
  "luminance": 0.0532
}

Semantic roles & 50–950 ramp

primary

#2F378F

secondary

#B5AF65

accent

#CE4EDA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #2F378F

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

Preview Lab → · Contrast checker → · Palette generator →