#2F309C#2F309C

#2F309C is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.6% C 0.170 H 274.6°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#2F309C
RGB	rgb(47, 48, 156)
HSL	hsl(239, 54%, 40%)
HSV	hsv(239, 70%, 61%)
CMYK	cmyk(69.9%, 69.2%, 0%, 38.8%)
CIE-LAB	lab(27.07, 35.55, -58.72)
CIE-LCH	lch(27.07, 68.64, 301.19°)
OKLab	oklab(38.61% 0.0136 -0.1696)
OKLCH	oklch(38.61% 0.17 274.6)
XYZ	xyz(8.2280, 5.1178, 32.0003)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F309C #9C9B2F

analogous

#2F669C #2F309C #652F9C

triadic

#2F309C #9C2F30 #309C2F

tetradic

#2F309C #9C2F66 #9C9B2F #2F9C65

square

#2F309C #9C2F66 #9C9B2F #2F9C65

split-complementary

#2F309C #9C652F #669C2F

monochromatic

#13133E #21226D #2F309C #4243C6 #7172D4

Accessibility & contrast

On white

10.38

#2F309C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#2F309C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F309C

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F309C	#FFFFFF	#000000	##FFFFFF
##2F309C	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459F

Deuteranopia (green-blind)

#003B9A

Tritanopia (blue-blind)

#004D62

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2f309c;
/* rgb */ color: rgb(47, 48, 156);
/* oklch */ color: oklch(38.6% 0.170 274.6);

Tailwind

colors: {
  custom: {
    50: '#7769ba',
    500: '#2f309c',
    950: '#000000',
  },
}

SCSS

$custom: #2f309c;
$custom-light: #7769ba;
$custom-dark: #000000;

JSON

{
  "hex": "#2f309c",
  "rgb": {
    "r": 47,
    "g": 48,
    "b": 156
  },
  "hsl": {
    "h": 239.45,
    "s": 53.695,
    "l": 39.804
  },
  "oklch": {
    "l": 0.38606,
    "c": 0.17018,
    "h": 274.6
  },
  "luminance": 0.05119
}

Semantic roles & 50–950 ramp

primary

#2F309C

secondary

#BCBB6B

accent

#DC4BDD

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2F309C

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

Preview Lab → · Contrast checker → · Palette generator →