#2B37A4#2B37A4

#2B37A4 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.3% C 0.174 H 271.2°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#2B37A4
RGB	rgb(43, 55, 164)
HSL	hsl(234, 58%, 41%)
HSV	hsv(234, 74%, 64%)
CMYK	cmyk(73.8%, 66.5%, 0%, 35.7%)
CIE-LAB	lab(29.22, 33.48, -60.04)
CIE-LCH	lch(29.22, 68.75, 299.14°)
OKLab	oklab(40.34% 0.0035 -0.1736)
OKLCH	oklch(40.34% 0.174 271.2)
XYZ	xyz(9.0610, 5.9254, 35.7809)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B37A4 #A4982B

analogous

#2B73A4 #2B37A4 #5C2BA4

triadic

#2B37A4 #A42B37 #37A42B

tetradic

#2B37A4 #A42B73 #A4982B #2BA45C

square

#2B37A4 #A42B73 #A4982B #2BA45C

split-complementary

#2B37A4 #A45C2B #73A42B

monochromatic

#121643 #1E2774 #2B37A4 #3F4DCD #707AD9

Accessibility & contrast

On white

9.61

#2B37A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#2B37A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B37A4

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B37A4	#FFFFFF	#000000	##FFFFFF
##2B37A4	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA7

Deuteranopia (green-blind)

#003FA2

Tritanopia (blue-blind)

#005468

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2b37a4;
/* rgb */ color: rgb(43, 55, 164);
/* oklch */ color: oklch(40.3% 0.174 271.2);

Tailwind

colors: {
  custom: {
    50: '#776ec0',
    500: '#2b37a4',
    950: '#000000',
  },
}

SCSS

$custom: #2b37a4;
$custom-light: #776ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b37a4",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 164
  },
  "hsl": {
    "h": 234.05,
    "s": 58.454,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40336,
    "c": 0.17363,
    "h": 271.2
  },
  "luminance": 0.05926
}

Semantic roles & 50–950 ramp

primary

#2B37A4

secondary

#C1B86A

accent

#D246E2

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2B37A4

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

Preview Lab → · Contrast checker → · Palette generator →