#2337B1#2337B1

#2337B1 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.2% C 0.193 H 268.4°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#2337B1
RGB	rgb(35, 55, 177)
HSL	hsl(232, 67%, 42%)
HSV	hsv(232, 80%, 69%)
CMYK	cmyk(80.2%, 68.9%, 0%, 30.6%)
CIE-LAB	lab(30.07, 37.42, -66.47)
CIE-LCH	lch(30.07, 76.28, 299.38°)
OKLab	oklab(41.22% -0.0054 -0.1925)
OKLCH	oklch(41.22% 0.193 268.4)
XYZ	xyz(9.9924, 6.2629, 42.2687)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.56

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2337B1 #B19D23

analogous

#237EB1 #2337B1 #5623B1

triadic

#2337B1 #B12337 #37B123

tetradic

#2337B1 #B1237E #B19D23 #23B156

square

#2337B1 #B1237E #B19D23 #23B156

split-complementary

#2337B1 #B15623 #7EB123

monochromatic

#0F174B #19277E #2337B1 #3950D8 #6C7DE2

Accessibility & contrast

On white

9.32

#2337B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#2337B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2337B1

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2337B1	#FFFFFF	#000000	##FFFFFF
##2337B1	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB5

Deuteranopia (green-blind)

#0040AF

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2337b1;
/* rgb */ color: rgb(35, 55, 177);
/* oklch */ color: oklch(41.2% 0.193 268.4);

Tailwind

colors: {
  custom: {
    50: '#776ec9',
    500: '#2337b1',
    950: '#000000',
  },
}

SCSS

$custom: #2337b1;
$custom-light: #776ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#2337b1",
  "rgb": {
    "r": 35,
    "g": 55,
    "b": 177
  },
  "hsl": {
    "h": 231.549,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41217,
    "c": 0.19261,
    "h": 268.4
  },
  "luminance": 0.06264
}

Semantic roles & 50–950 ramp

primary

#2337B1

secondary

#C8BB68

accent

#D23EEA

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2337B1

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

Preview Lab → · Contrast checker → · Palette generator →