#437AF4#437AF4

#437AF4 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.8% C 0.192 H 263.5°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#437AF4
RGB	rgb(67, 122, 244)
HSL	hsl(221, 89%, 61%)
HSV	hsv(221, 73%, 96%)
CMYK	cmyk(72.5%, 50%, 0%, 4.3%)
CIE-LAB	lab(53.64, 22.70, -66.50)
CIE-LCH	lch(53.64, 70.27, 288.85°)
OKLab	oklab(60.83% -0.0218 -0.1912)
OKLCH	oklch(60.83% 0.192 263.5)
XYZ	xyz(25.5976, 21.6412, 88.3985)
Luminance	0.2164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437AF4 #F4BD43

analogous

#43D2F4 #437AF4 #6443F4

triadic

#437AF4 #F4437A #7AF443

tetradic

#437AF4 #F443D2 #F4BD43 #43F464

square

#437AF4 #F443D2 #F4BD43 #43F464

split-complementary

#437AF4 #F46443 #D2F443

monochromatic

#0A3FB2 #0E53EC #437AF4 #7DA3F7 #B7CCFB

Accessibility & contrast

On white

3.94

#437AF4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#437AF4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437AF4

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437AF4	#FFFFFF	#000000	##000000
##437AF4	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F89F8

Deuteranopia (green-blind)

#0078F2

Tritanopia (blue-blind)

#0097AB

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #437af4;
/* rgb */ color: rgb(67, 122, 244);
/* oklch */ color: oklch(60.8% 0.192 263.5);

Tailwind

colors: {
  custom: {
    50: '#8d9ff8',
    500: '#437af4',
    950: '#000000',
  },
}

SCSS

$custom: #437af4;
$custom-light: #8d9ff8;
$custom-dark: #000000;

JSON

{
  "hex": "#437af4",
  "rgb": {
    "r": 67,
    "g": 122,
    "b": 244
  },
  "hsl": {
    "h": 221.356,
    "s": 88.945,
    "l": 60.98
  },
  "oklch": {
    "l": 0.60825,
    "c": 0.19243,
    "h": 263.5
  },
  "luminance": 0.21644
}

Semantic roles & 50–950 ramp

primary

#437AF4

secondary

#EBD6A8

accent

#9E00E6

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #437AF4

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

Preview Lab → · Contrast checker → · Palette generator →