#2F378C#2F378C

#2F378C is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.4% C 0.140 H 273.7°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#2F378C
RGB	rgb(47, 55, 140)
HSL	hsl(235, 50%, 37%)
HSV	hsv(235, 66%, 55%)
CMYK	cmyk(66.4%, 60.7%, 0%, 45.1%)
CIE-LAB	lab(27.38, 25.27, -48.38)
CIE-LCH	lch(27.38, 54.58, 297.58°)
OKLab	oklab(38.4% 0.0091 -0.1393)
OKLCH	oklch(38.4% 0.14 273.7)
XYZ	xyz(7.2705, 5.2295, 25.4321)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F378C #8C842F

analogous

#2F668C #2F378C #562F8C

triadic

#2F378C #8C2F37 #378C2F

tetradic

#2F378C #8C2F66 #8C842F #2F8C56

square

#2F378C #8C2F66 #8C842F #2F8C56

split-complementary

#2F378C #8C562F #668C2F

monochromatic

#101330 #20255E #2F378C #3E49BA #6971CD

Accessibility & contrast

On white

10.26

#2F378C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#2F378C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F378C

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F378C	#FFFFFF	#000000	##FFFFFF
##2F378C	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003D8A

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2f378c;
/* rgb */ color: rgb(47, 55, 140);
/* oklch */ color: oklch(38.4% 0.140 273.7);

Tailwind

colors: {
  custom: {
    50: '#736dae',
    500: '#2f378c',
    950: '#000000',
  },
}

SCSS

$custom: #2f378c;
$custom-light: #736dae;
$custom-dark: #000000;

JSON

{
  "hex": "#2f378c",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 140
  },
  "hsl": {
    "h": 234.839,
    "s": 49.733,
    "l": 36.667
  },
  "oklch": {
    "l": 0.38398,
    "c": 0.13958,
    "h": 273.7
  },
  "luminance": 0.0523
}

Semantic roles & 50–950 ramp

primary

#2F378C

secondary

#B4AD63

accent

#CD4FD9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #2F378C

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

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