#2F3FB2#2F3FB2

#2F3FB2 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.182 H 270.5°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#2F3FB2
RGB	rgb(47, 63, 178)
HSL	hsl(233, 58%, 44%)
HSV	hsv(233, 74%, 70%)
CMYK	cmyk(73.6%, 64.6%, 0%, 30.2%)
CIE-LAB	lab(32.64, 33.88, -62.82)
CIE-LCH	lch(32.64, 71.37, 298.34°)
OKLab	oklab(43.28% 0.0016 -0.1816)
OKLCH	oklch(43.28% 0.182 270.5)
XYZ	xyz(10.9829, 7.3726, 42.9551)
Luminance	0.0737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3FB2 #B2A22F

analogous

#2F81B2 #2F3FB2 #612FB2

triadic

#2F3FB2 #B22F3F #3FB22F

tetradic

#2F3FB2 #B22F81 #B2A22F #2FB261

square

#2F3FB2 #B22F81 #B2A22F #2FB261

split-complementary

#2F3FB2 #B2612F #81B22F

monochromatic

#151D51 #222E82 #2F3FB2 #4E5ED0 #7E8ADD

Accessibility & contrast

On white

8.49

#2F3FB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#2F3FB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3FB2

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3FB2	#FFFFFF	#000000	##FFFFFF
##2F3FB2	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B6

Deuteranopia (green-blind)

#0047B0

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2f3fb2;
/* rgb */ color: rgb(47, 63, 178);
/* oklch */ color: oklch(43.3% 0.182 270.5);

Tailwind

colors: {
  custom: {
    50: '#7b74ca',
    500: '#2f3fb2',
    950: '#000000',
  },
}

SCSS

$custom: #2f3fb2;
$custom-light: #7b74ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3fb2",
  "rgb": {
    "r": 47,
    "g": 63,
    "b": 178
  },
  "hsl": {
    "h": 232.672,
    "s": 58.222,
    "l": 44.118
  },
  "oklch": {
    "l": 0.43281,
    "c": 0.18159,
    "h": 270.5
  },
  "luminance": 0.07374
}

Semantic roles & 50–950 ramp

primary

#2F3FB2

secondary

#C6BC77

accent

#CE46E1

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F3FB2

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

Preview Lab → · Contrast checker → · Palette generator →