#2337A5#2337A5

#2337A5 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.177 H 268.5°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#2337A5
RGB	rgb(35, 55, 165)
HSL	hsl(231, 65%, 39%)
HSV	hsv(231, 79%, 65%)
CMYK	cmyk(78.8%, 66.7%, 0%, 35.3%)
CIE-LAB	lab(28.92, 33.01, -61.17)
CIE-LCH	lch(28.92, 69.51, 298.35°)
OKLab	oklab(40.03% -0.0045 -0.1771)
OKLCH	oklch(40.03% 0.177 268.5)
XYZ	xyz(8.8485, 5.8053, 36.2442)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2337A5 #A59123

analogous

#2378A5 #2337A5 #5023A5

triadic

#2337A5 #A52337 #37A523

tetradic

#2337A5 #A52378 #A59123 #23A550

square

#2337A5 #A52378 #A59123 #23A550

split-complementary

#2337A5 #A55023 #78A523

monochromatic

#0E1540 #182673 #2337A5 #324BD3 #6477DE

Accessibility & contrast

On white

9.72

#2337A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#2337A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2337A5

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2337A5	#FFFFFF	#000000	##FFFFFF
##2337A5	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA8

Deuteranopia (green-blind)

#003EA3

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2337a5;
/* rgb */ color: rgb(35, 55, 165);
/* oklch */ color: oklch(40.0% 0.177 268.5);

Tailwind

colors: {
  custom: {
    50: '#746ec1',
    500: '#2337a5',
    950: '#000000',
  },
}

SCSS

$custom: #2337a5;
$custom-light: #746ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#2337a5",
  "rgb": {
    "r": 35,
    "g": 55,
    "b": 165
  },
  "hsl": {
    "h": 230.769,
    "s": 65,
    "l": 39.216
  },
  "oklch": {
    "l": 0.4003,
    "c": 0.17711,
    "h": 268.5
  },
  "luminance": 0.05806
}

Semantic roles & 50–950 ramp

primary

#2337A5

secondary

#C4B460

accent

#CE40E8

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2337A5

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

Preview Lab → · Contrast checker → · Palette generator →