#2F399B#2F399B

#2F399B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.1% C 0.158 H 272.5°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#2F399B
RGB	rgb(47, 57, 155)
HSL	hsl(234, 53%, 40%)
HSV	hsv(234, 70%, 61%)
CMYK	cmyk(69.7%, 63.2%, 0%, 39.2%)
CIE-LAB	lab(29.15, 29.42, -54.70)
CIE-LCH	lch(29.15, 62.11, 298.28°)
OKLab	oklab(40.1% 0.007 -0.1578)
OKLCH	oklch(40.1% 0.158 272.5)
XYZ	xyz(8.5498, 5.8963, 31.6915)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F399B #9B912F

analogous

#2F6F9B #2F399B #5B2F9B

triadic

#2F399B #9B2F39 #399B2F

tetradic

#2F399B #9B2F6F #9B912F #2F9B5B

square

#2F399B #9B2F6F #9B912F #2F9B5B

split-complementary

#2F399B #9B5B2F #6F9B2F

monochromatic

#13163D #21286C #2F399B #424EC6 #717AD4

Accessibility & contrast

On white

9.64

#2F399B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#2F399B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F399B

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F399B	#FFFFFF	#000000	##FFFFFF
##2F399B	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#004099

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2f399b;
/* rgb */ color: rgb(47, 57, 155);
/* oklch */ color: oklch(40.1% 0.158 272.5);

Tailwind

colors: {
  custom: {
    50: '#766fb9',
    500: '#2f399b',
    950: '#000000',
  },
}

SCSS

$custom: #2f399b;
$custom-light: #766fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f399b",
  "rgb": {
    "r": 47,
    "g": 57,
    "b": 155
  },
  "hsl": {
    "h": 234.444,
    "s": 53.465,
    "l": 39.608
  },
  "oklch": {
    "l": 0.40097,
    "c": 0.15798,
    "h": 272.5
  },
  "luminance": 0.05897
}

Semantic roles & 50–950 ramp

primary

#2F399B

secondary

#BBB46A

accent

#CF4BDD

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2F399B

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

Preview Lab → · Contrast checker → · Palette generator →