#2F3DAB#2F3DAB

#2F3DAB is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.175 H 271.1°. Best body text is #FFFFFF at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#2F3DAB
RGB	rgb(47, 61, 171)
HSL	hsl(233, 57%, 43%)
HSV	hsv(233, 73%, 67%)
CMYK	cmyk(72.5%, 64.3%, 0%, 32.9%)
CIE-LAB	lab(31.53, 32.63, -60.46)
CIE-LCH	lch(31.53, 68.70, 298.36°)
OKLab	oklab(42.28% 0.0033 -0.1747)
OKLCH	oklch(42.28% 0.175 271.1)
XYZ	xyz(10.1892, 6.8811, 39.3114)
Luminance	0.0688 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.44

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3DAB #AB9D2F

analogous

#2F7BAB #2F3DAB #5F2FAB

triadic

#2F3DAB #AB2F3D #3DAB2F

tetradic

#2F3DAB #AB2F7B #AB9D2F #2FAB5F

square

#2F3DAB #AB2F7B #AB9D2F #2FAB5F

split-complementary

#2F3DAB #AB5F2F #7BAB2F

monochromatic

#151B4B #222C7B #2F3DAB #4A59CD #7A85DA

Accessibility & contrast

On white

8.84

#2F3DAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#2F3DAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3DAB

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3DAB	#FFFFFF	#000000	##FFFFFF
##2F3DAB	1.00	8.84	2.38	8.84
#FFFFFF	8.84	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AF

Deuteranopia (green-blind)

#0044A9

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2f3dab;
/* rgb */ color: rgb(47, 61, 171);
/* oklch */ color: oklch(42.3% 0.175 271.1);

Tailwind

colors: {
  custom: {
    50: '#7972c5',
    500: '#2f3dab',
    950: '#000000',
  },
}

SCSS

$custom: #2f3dab;
$custom-light: #7972c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3dab",
  "rgb": {
    "r": 47,
    "g": 61,
    "b": 171
  },
  "hsl": {
    "h": 233.226,
    "s": 56.881,
    "l": 42.745
  },
  "oklch": {
    "l": 0.4228,
    "c": 0.1747,
    "h": 271.1
  },
  "luminance": 0.06882
}

Semantic roles & 50–950 ramp

primary

#2F3DAB

secondary

#C3BA73

accent

#CF48E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2F3DAB

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

Preview Lab → · Contrast checker → · Palette generator →