#437CD1#437CD1

#437CD1 is a mid, vivid blue. Relative luminance 0.202; OKLCH L 58.9% C 0.144 H 258.3°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#437CD1
RGB	rgb(67, 124, 209)
HSL	hsl(216, 61%, 54%)
HSV	hsv(216, 68%, 82%)
CMYK	cmyk(67.9%, 40.7%, 0%, 18%)
CIE-LAB	lab(52.07, 8.98, -49.38)
CIE-LCH	lch(52.07, 50.19, 280.31°)
OKLab	oklab(58.94% -0.0292 -0.1408)
OKLCH	oklch(58.94% 0.144 258.3)
XYZ	xyz(21.0269, 20.2099, 63.1020)
Luminance	0.2021 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437CD1 #D19843

analogous

#43C3D1 #437CD1 #5143D1

triadic

#437CD1 #D1437C #7CD143

tetradic

#437CD1 #D143C3 #D19843 #43D151

square

#437CD1 #D143C3 #D19843 #43D151

split-complementary

#437CD1 #D15143 #C3D143

monochromatic

#1E447B #2A5FAD #437CD1 #749EDD #A5C1E9

Accessibility & contrast

On white

4.16

#437CD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#437CD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437CD1

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437CD1	#FFFFFF	#000000	##000000
##437CD1	1.00	4.16	5.04	5.04
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5583D4

Deuteranopia (green-blind)

#3E76CF

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #437cd1;
/* rgb */ color: rgb(67, 124, 209);
/* oklch */ color: oklch(58.9% 0.144 258.3);

Tailwind

colors: {
  custom: {
    50: '#86a1df',
    500: '#437cd1',
    950: '#000000',
  },
}

SCSS

$custom: #437cd1;
$custom-light: #86a1df;
$custom-dark: #000000;

JSON

{
  "hex": "#437cd1",
  "rgb": {
    "r": 67,
    "g": 124,
    "b": 209
  },
  "hsl": {
    "h": 215.915,
    "s": 60.684,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58938,
    "c": 0.14381,
    "h": 258.3
  },
  "luminance": 0.20212
}

Semantic roles & 50–950 ramp

primary

#437CD1

secondary

#D6BE9A

accent

#A444E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #437CD1

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

Preview Lab → · Contrast checker → · Palette generator →