#2F309E#2F309E

#2F309E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.8% C 0.173 H 274.4°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#2F309E
RGB	rgb(47, 48, 158)
HSL	hsl(239, 54%, 40%)
HSV	hsv(239, 70%, 62%)
CMYK	cmyk(70.3%, 69.6%, 0%, 38%)
CIE-LAB	lab(27.26, 36.25, -59.62)
CIE-LCH	lch(27.26, 69.78, 301.30°)
OKLab	oklab(38.8% 0.0133 -0.1723)
OKLCH	oklch(38.8% 0.173 274.4)
XYZ	xyz(8.3988, 5.1861, 32.8995)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F309E #9E9D2F

analogous

#2F689E #2F309E #652F9E

triadic

#2F309E #9E2F30 #309E2F

tetradic

#2F309E #9E2F68 #9E9D2F #2F9E65

square

#2F309E #9E2F68 #9E9D2F #2F9E65

split-complementary

#2F309E #9E652F #689E2F

monochromatic

#131340 #21226F #2F309E #4344C7 #7273D5

Accessibility & contrast

On white

10.31

#2F309E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#2F309E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F309E

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F309E	#FFFFFF	#000000	##FFFFFF
##2F309E	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A1

Deuteranopia (green-blind)

#003B9C

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2f309e;
/* rgb */ color: rgb(47, 48, 158);
/* oklch */ color: oklch(38.8% 0.173 274.4);

Tailwind

colors: {
  custom: {
    50: '#7869bc',
    500: '#2f309e',
    950: '#000000',
  },
}

SCSS

$custom: #2f309e;
$custom-light: #7869bc;
$custom-dark: #000000;

JSON

{
  "hex": "#2f309e",
  "rgb": {
    "r": 47,
    "g": 48,
    "b": 158
  },
  "hsl": {
    "h": 239.459,
    "s": 54.146,
    "l": 40.196
  },
  "oklch": {
    "l": 0.38802,
    "c": 0.17279,
    "h": 274.4
  },
  "luminance": 0.05187
}

Semantic roles & 50–950 ramp

primary

#2F309E

secondary

#BDBC6C

accent

#DC4ADE

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2F309E

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

Preview Lab → · Contrast checker → · Palette generator →