#2F309A#2F309A

#2F309A is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.4% C 0.168 H 274.7°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#2F309A
RGB	rgb(47, 48, 154)
HSL	hsl(239, 53%, 39%)
HSV	hsv(239, 69%, 60%)
CMYK	cmyk(69.5%, 68.8%, 0%, 39.6%)
CIE-LAB	lab(26.88, 34.85, -57.81)
CIE-LCH	lch(26.88, 67.50, 301.08°)
OKLab	oklab(38.41% 0.0138 -0.167)
OKLCH	oklch(38.41% 0.168 274.7)
XYZ	xyz(8.0600, 5.0506, 31.1157)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F309A #9A992F

analogous

#2F669A #2F309A #642F9A

triadic

#2F309A #9A2F30 #309A2F

tetradic

#2F309A #9A2F66 #9A992F #2F9A64

square

#2F309A #9A2F66 #9A992F #2F9A64

split-complementary

#2F309A #9A642F #669A2F

monochromatic

#12133C #21216B #2F309A #4142C5 #7071D3

Accessibility & contrast

On white

10.45

#2F309A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#2F309A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F309A

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F309A	#FFFFFF	#000000	##FFFFFF
##2F309A	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449D

Deuteranopia (green-blind)

#003B98

Tritanopia (blue-blind)

#004C61

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2f309a;
/* rgb */ color: rgb(47, 48, 154);
/* oklch */ color: oklch(38.4% 0.168 274.7);

Tailwind

colors: {
  custom: {
    50: '#7769b9',
    500: '#2f309a',
    950: '#000000',
  },
}

SCSS

$custom: #2f309a;
$custom-light: #7769b9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f309a",
  "rgb": {
    "r": 47,
    "g": 48,
    "b": 154
  },
  "hsl": {
    "h": 239.439,
    "s": 53.234,
    "l": 39.412
  },
  "oklch": {
    "l": 0.38412,
    "c": 0.16754,
    "h": 274.7
  },
  "luminance": 0.05051
}

Semantic roles & 50–950 ramp

primary

#2F309A

secondary

#BBBA6A

accent

#DB4BDD

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2F309A

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

Preview Lab → · Contrast checker → · Palette generator →