#2F42B4#2F42B4

#2F42B4 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.0% C 0.181 H 269.8°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#2F42B4
RGB	rgb(47, 66, 180)
HSL	hsl(231, 59%, 45%)
HSV	hsv(231, 74%, 71%)
CMYK	cmyk(73.9%, 63.3%, 0%, 29.4%)
CIE-LAB	lab(33.55, 32.68, -62.52)
CIE-LCH	lch(33.55, 70.54, 297.60°)
OKLab	oklab(44.01% -0.0005 -0.1807)
OKLCH	oklch(44.01% 0.181 269.8)
XYZ	xyz(11.3559, 7.7949, 44.0772)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F42B4 #B4A12F

analogous

#2F84B4 #2F42B4 #5F2FB4

triadic

#2F42B4 #B42F42 #42B42F

tetradic

#2F42B4 #B42F84 #B4A12F #2FB45F

square

#2F42B4 #B42F84 #B4A12F #2FB45F

split-complementary

#2F42B4 #B45F2F #84B42F

monochromatic

#161E53 #223083 #2F42B4 #4F62D1 #808DDE

Accessibility & contrast

On white

8.21

#2F42B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#2F42B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F42B4

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F42B4	#FFFFFF	#000000	##FFFFFF
##2F42B4	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#006075

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2f42b4;
/* rgb */ color: rgb(47, 66, 180);
/* oklch */ color: oklch(44.0% 0.181 269.8);

Tailwind

colors: {
  custom: {
    50: '#7b76cb',
    500: '#2f42b4',
    950: '#000000',
  },
}

SCSS

$custom: #2f42b4;
$custom-light: #7b76cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2f42b4",
  "rgb": {
    "r": 47,
    "g": 66,
    "b": 180
  },
  "hsl": {
    "h": 231.429,
    "s": 58.59,
    "l": 44.51
  },
  "oklch": {
    "l": 0.44005,
    "c": 0.18066,
    "h": 269.8
  },
  "luminance": 0.07796
}

Semantic roles & 50–950 ramp

primary

#2F42B4

secondary

#C7BB78

accent

#CC46E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F42B4

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

Preview Lab → · Contrast checker → · Palette generator →