#2F42B1#2F42B1

#2F42B1 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.7% C 0.177 H 269.9°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#2F42B1
RGB	rgb(47, 66, 177)
HSL	hsl(231, 58%, 44%)
HSV	hsv(231, 73%, 69%)
CMYK	cmyk(73.4%, 62.7%, 0%, 30.6%)
CIE-LAB	lab(33.29, 31.58, -61.16)
CIE-LCH	lch(33.29, 68.83, 297.31°)
OKLab	oklab(43.74% -0.0004 -0.1767)
OKLCH	oklch(43.74% 0.177 269.9)
XYZ	xyz(11.0536, 7.6739, 42.4851)
Luminance	0.0767 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F42B1 #B19E2F

analogous

#2F83B1 #2F42B1 #5D2FB1

triadic

#2F42B1 #B12F42 #42B12F

tetradic

#2F42B1 #B12F83 #B19E2F #2FB15D

square

#2F42B1 #B12F83 #B19E2F #2FB15D

split-complementary

#2F42B1 #B15D2F #83B12F

monochromatic

#151E50 #223081 #2F42B1 #4D60D0 #7E8CDD

Accessibility & contrast

On white

8.28

#2F42B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#2F42B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F42B1

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F42B1	#FFFFFF	#000000	##FFFFFF
##2F42B1	1.00	8.28	2.53	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B5

Deuteranopia (green-blind)

#0048AF

Tritanopia (blue-blind)

#005F73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2f42b1;
/* rgb */ color: rgb(47, 66, 177);
/* oklch */ color: oklch(43.7% 0.177 269.9);

Tailwind

colors: {
  custom: {
    50: '#7a76c9',
    500: '#2f42b1',
    950: '#000000',
  },
}

SCSS

$custom: #2f42b1;
$custom-light: #7a76c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f42b1",
  "rgb": {
    "r": 47,
    "g": 66,
    "b": 177
  },
  "hsl": {
    "h": 231.231,
    "s": 58.036,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43736,
    "c": 0.17668,
    "h": 269.9
  },
  "luminance": 0.07675
}

Semantic roles & 50–950 ramp

primary

#2F42B1

secondary

#C5BA76

accent

#CB47E1

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F42B1

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

Preview Lab → · Contrast checker → · Palette generator →