#2F378D#2F378D

#2F378D is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.5% C 0.141 H 273.7°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#2F378D
RGB	rgb(47, 55, 141)
HSL	hsl(235, 50%, 37%)
HSV	hsv(235, 67%, 55%)
CMYK	cmyk(66.7%, 61%, 0%, 44.7%)
CIE-LAB	lab(27.46, 25.64, -48.86)
CIE-LCH	lch(27.46, 55.18, 297.68°)
OKLab	oklab(38.48% 0.0091 -0.1407)
OKLCH	oklch(38.48% 0.141 273.7)
XYZ	xyz(7.3446, 5.2592, 25.8222)
Luminance	0.0526 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F378D #8D852F

analogous

#2F668D #2F378D #562F8D

triadic

#2F378D #8D2F37 #378D2F

tetradic

#2F378D #8D2F66 #8D852F #2F8D56

square

#2F378D #8D2F66 #8D852F #2F8D56

split-complementary

#2F378D #8D562F #668D2F

monochromatic

#101331 #20255F #2F378D #3E49BB #6972CD

Accessibility & contrast

On white

10.23

#2F378D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#2F378D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F378D

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F378D	#FFFFFF	#000000	##FFFFFF
##2F378D	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003D8B

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2f378d;
/* rgb */ color: rgb(47, 55, 141);
/* oklch */ color: oklch(38.5% 0.141 273.7);

Tailwind

colors: {
  custom: {
    50: '#736daf',
    500: '#2f378d',
    950: '#000000',
  },
}

SCSS

$custom: #2f378d;
$custom-light: #736daf;
$custom-dark: #000000;

JSON

{
  "hex": "#2f378d",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 141
  },
  "hsl": {
    "h": 234.894,
    "s": 50,
    "l": 36.863
  },
  "oklch": {
    "l": 0.38484,
    "c": 0.14099,
    "h": 273.7
  },
  "luminance": 0.0526
}

Semantic roles & 50–950 ramp

primary

#2F378D

secondary

#B4AD64

accent

#CE4EDA

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #2F378D

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

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