#2437A1#2437A1

#2437A1 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.7% C 0.172 H 268.9°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#2437A1
RGB	rgb(36, 55, 161)
HSL	hsl(231, 63%, 39%)
HSV	hsv(231, 78%, 63%)
CMYK	cmyk(77.6%, 65.8%, 0%, 36.9%)
CIE-LAB	lab(28.59, 31.61, -59.28)
CIE-LCH	lch(28.59, 67.19, 298.07°)
OKLab	oklab(39.69% -0.0033 -0.1715)
OKLCH	oklch(39.69% 0.172 268.9)
XYZ	xyz(8.5245, 5.6797, 34.3583)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2437A1 #A18E24

analogous

#2475A1 #2437A1 #4F24A1

triadic

#2437A1 #A12437 #37A124

tetradic

#2437A1 #A12475 #A18E24 #24A14F

square

#2437A1 #A12475 #A18E24 #24A14F

split-complementary

#2437A1 #A14F24 #75A124

monochromatic

#0E153D #19266F #2437A1 #3149D1 #6376DC

Accessibility & contrast

On white

9.83

#2437A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#2437A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2437A1

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2437A1	#FFFFFF	#000000	##FFFFFF
##2437A1	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A4

Deuteranopia (green-blind)

#003E9F

Tritanopia (blue-blind)

#005367

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2437a1;
/* rgb */ color: rgb(36, 55, 161);
/* oklch */ color: oklch(39.7% 0.172 268.9);

Tailwind

colors: {
  custom: {
    50: '#746dbe',
    500: '#2437a1',
    950: '#000000',
  },
}

SCSS

$custom: #2437a1;
$custom-light: #746dbe;
$custom-dark: #000000;

JSON

{
  "hex": "#2437a1",
  "rgb": {
    "r": 36,
    "g": 55,
    "b": 161
  },
  "hsl": {
    "h": 230.88,
    "s": 63.452,
    "l": 38.627
  },
  "oklch": {
    "l": 0.3969,
    "c": 0.17155,
    "h": 268.9
  },
  "luminance": 0.05681
}

Semantic roles & 50–950 ramp

primary

#2437A1

secondary

#C2B35F

accent

#CD41E6

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #2437A1

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

Preview Lab → · Contrast checker → · Palette generator →