#2F3CB1#2F3CB1

#2F3CB1 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.184 H 271.1°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#2F3CB1
RGB	rgb(47, 60, 177)
HSL	hsl(234, 58%, 44%)
HSV	hsv(234, 73%, 69%)
CMYK	cmyk(73.4%, 66.1%, 0%, 30.6%)
CIE-LAB	lab(31.83, 35.43, -63.56)
CIE-LCH	lch(31.83, 72.77, 299.14°)
OKLab	oklab(42.66% 0.0036 -0.1837)
OKLCH	oklch(42.66% 0.184 271.1)
XYZ	xyz(10.7213, 7.0093, 42.3743)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3CB1 #B1A42F

analogous

#2F7DB1 #2F3CB1 #632FB1

triadic

#2F3CB1 #B12F3C #3CB12F

tetradic

#2F3CB1 #B12F7D #B1A42F #2FB163

square

#2F3CB1 #B12F7D #B1A42F #2FB163

split-complementary

#2F3CB1 #B1632F #7DB12F

monochromatic

#151B50 #222C81 #2F3CB1 #4D5AD0 #7E87DD

Accessibility & contrast

On white

8.74

#2F3CB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#2F3CB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3CB1

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3CB1	#FFFFFF	#000000	##FFFFFF
##2F3CB1	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B5

Deuteranopia (green-blind)

#0045AF

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2f3cb1;
/* rgb */ color: rgb(47, 60, 177);
/* oklch */ color: oklch(42.7% 0.184 271.1);

Tailwind

colors: {
  custom: {
    50: '#7b72c9',
    500: '#2f3cb1',
    950: '#000000',
  },
}

SCSS

$custom: #2f3cb1;
$custom-light: #7b72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3cb1",
  "rgb": {
    "r": 47,
    "g": 60,
    "b": 177
  },
  "hsl": {
    "h": 234,
    "s": 58.036,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42659,
    "c": 0.18378,
    "h": 271.1
  },
  "luminance": 0.0701
}

Semantic roles & 50–950 ramp

primary

#2F3CB1

secondary

#C5BD76

accent

#D247E1

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F3CB1

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

Preview Lab → · Contrast checker → · Palette generator →