#2F43B0#2F43B0

#2F43B0 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.8% C 0.174 H 269.6°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#2F43B0
RGB	rgb(47, 67, 176)
HSL	hsl(231, 58%, 44%)
HSV	hsv(231, 73%, 69%)
CMYK	cmyk(73.3%, 61.9%, 0%, 31%)
CIE-LAB	lab(33.46, 30.56, -60.29)
CIE-LCH	lch(33.46, 67.59, 296.88°)
OKLab	oklab(43.83% -0.0011 -0.1741)
OKLCH	oklch(43.83% 0.174 269.6)
XYZ	xyz(11.0132, 7.7521, 41.9818)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F43B0 #B09C2F

analogous

#2F83B0 #2F43B0 #5B2FB0

triadic

#2F43B0 #B02F43 #43B02F

tetradic

#2F43B0 #B02F83 #B09C2F #2FB05B

square

#2F43B0 #B02F83 #B09C2F #2FB05B

split-complementary

#2F43B0 #B05B2F #83B02F

monochromatic

#151E4F #223180 #2F43B0 #4D61CF #7D8CDC

Accessibility & contrast

On white

8.23

#2F43B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#2F43B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F43B0

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F43B0	#FFFFFF	#000000	##FFFFFF
##2F43B0	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B4

Deuteranopia (green-blind)

#0049AE

Tritanopia (blue-blind)

#005F73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2f43b0;
/* rgb */ color: rgb(47, 67, 176);
/* oklch */ color: oklch(43.8% 0.174 269.6);

Tailwind

colors: {
  custom: {
    50: '#7a77c8',
    500: '#2f43b0',
    950: '#000000',
  },
}

SCSS

$custom: #2f43b0;
$custom-light: #7a77c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2f43b0",
  "rgb": {
    "r": 47,
    "g": 67,
    "b": 176
  },
  "hsl": {
    "h": 230.698,
    "s": 57.848,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43833,
    "c": 0.17412,
    "h": 269.6
  },
  "luminance": 0.07753
}

Semantic roles & 50–950 ramp

primary

#2F43B0

secondary

#C5B976

accent

#C947E1

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F43B0

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

Preview Lab → · Contrast checker → · Palette generator →