#2F378E#2F378E

#2F378E is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.6% C 0.142 H 273.7°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#2F378E
RGB	rgb(47, 55, 142)
HSL	hsl(235, 50%, 37%)
HSV	hsv(235, 67%, 56%)
CMYK	cmyk(66.9%, 61.3%, 0%, 44.3%)
CIE-LAB	lab(27.54, 26.00, -49.35)
CIE-LCH	lch(27.54, 55.78, 297.78°)
OKLab	oklab(38.57% 0.0091 -0.1421)
OKLCH	oklch(38.57% 0.142 273.7)
XYZ	xyz(7.4193, 5.2891, 26.2158)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F378E #8E862F

analogous

#2F678E #2F378E #562F8E

triadic

#2F378E #8E2F37 #378E2F

tetradic

#2F378E #8E2F67 #8E862F #2F8E56

square

#2F378E #8E2F67 #8E862F #2F8E56

split-complementary

#2F378E #8E562F #678E2F

monochromatic

#111332 #202560 #2F378E #3E49BC #6A72CE

Accessibility & contrast

On white

10.20

#2F378E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#2F378E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F378E

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F378E	#FFFFFF	#000000	##FFFFFF
##2F378E	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2f378e;
/* rgb */ color: rgb(47, 55, 142);
/* oklch */ color: oklch(38.6% 0.142 273.7);

Tailwind

colors: {
  custom: {
    50: '#736db0',
    500: '#2f378e',
    950: '#000000',
  },
}

SCSS

$custom: #2f378e;
$custom-light: #736db0;
$custom-dark: #000000;

JSON

{
  "hex": "#2f378e",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 142
  },
  "hsl": {
    "h": 234.947,
    "s": 50.265,
    "l": 37.059
  },
  "oklch": {
    "l": 0.3857,
    "c": 0.14241,
    "h": 273.7
  },
  "luminance": 0.0529
}

Semantic roles & 50–950 ramp

primary

#2F378E

secondary

#B5AE64

accent

#CE4EDA

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #2F378E

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

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