#2B37B8#2B37B8

#2B37B8 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.3% C 0.199 H 270.5°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#2B37B8
RGB	rgb(43, 55, 184)
HSL	hsl(235, 62%, 45%)
HSV	hsv(235, 77%, 72%)
CMYK	cmyk(76.6%, 70.1%, 0%, 27.8%)
CIE-LAB	lab(31.13, 40.61, -68.87)
CIE-LCH	lch(31.13, 79.96, 300.53°)
OKLab	oklab(42.29% 0.0016 -0.1994)
OKLCH	oklch(42.29% 0.199 270.5)
XYZ	xyz(11.0112, 6.7055, 46.0521)
Luminance	0.0671 (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

#2B37B8 #B8AC2B

analogous

#2B7DB8 #2B37B8 #662BB8

triadic

#2B37B8 #B82B37 #37B82B

tetradic

#2B37B8 #B82B7D #B8AC2B #2BB866

square

#2B37B8 #B82B7D #B8AC2B #2BB866

split-complementary

#2B37B8 #B8662B #7DB82B

monochromatic

#141955 #1F2886 #2B37B8 #4B57D5 #7D85E1

Accessibility & contrast

On white

8.97

#2B37B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#2B37B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B37B8

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B37B8	#FFFFFF	#000000	##FFFFFF
##2B37B8	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BC

Deuteranopia (green-blind)

#0042B6

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2b37b8;
/* rgb */ color: rgb(43, 55, 184);
/* oklch */ color: oklch(42.3% 0.199 270.5);

Tailwind

colors: {
  custom: {
    50: '#7c6ecf',
    500: '#2b37b8',
    950: '#000000',
  },
}

SCSS

$custom: #2b37b8;
$custom-light: #7c6ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b37b8",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 184
  },
  "hsl": {
    "h": 234.894,
    "s": 62.115,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42294,
    "c": 0.1994,
    "h": 270.5
  },
  "luminance": 0.06707
}

Semantic roles & 50–950 ramp

primary

#2B37B8

secondary

#C9C276

accent

#D743E5

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #2B37B8

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

Preview Lab → · Contrast checker → · Palette generator →