#437EF1#437EF1

#437EF1 is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.4% C 0.184 H 262.1°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#437EF1
RGB	rgb(67, 126, 241)
HSL	hsl(220, 86%, 60%)
HSV	hsv(220, 72%, 95%)
CMYK	cmyk(72.2%, 47.7%, 0%, 5.5%)
CIE-LAB	lab(54.52, 19.16, -63.43)
CIE-LCH	lch(54.52, 66.26, 286.80°)
OKLab	oklab(61.43% -0.0254 -0.1821)
OKLCH	oklch(61.43% 0.184 262.1)
XYZ	xyz(25.6471, 22.4631, 86.1862)
Luminance	0.2247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437EF1 #F1B643

analogous

#43D5F1 #437EF1 #5F43F1

triadic

#437EF1 #F1437E #7EF143

tetradic

#437EF1 #F143D5 #F1B643 #43F15F

square

#437EF1 #F143D5 #F1B643 #43F15F

split-complementary

#437EF1 #F15F43 #D5F143

monochromatic

#0D43AD #1159E6 #437EF1 #7CA5F5 #B5CCF9

Accessibility & contrast

On white

3.82

#437EF1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#437EF1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437EF1

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437EF1	#FFFFFF	#000000	##000000
##437EF1	1.00	3.82	5.49	5.49
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E8BF5

Deuteranopia (green-blind)

#007BEF

Tritanopia (blue-blind)

#0099AC

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #437ef1;
/* rgb */ color: rgb(67, 126, 241);
/* oklch */ color: oklch(61.4% 0.184 262.1);

Tailwind

colors: {
  custom: {
    50: '#8ca2f6',
    500: '#437ef1',
    950: '#000000',
  },
}

SCSS

$custom: #437ef1;
$custom-light: #8ca2f6;
$custom-dark: #000000;

JSON

{
  "hex": "#437ef1",
  "rgb": {
    "r": 67,
    "g": 126,
    "b": 241
  },
  "hsl": {
    "h": 219.655,
    "s": 86.139,
    "l": 60.392
  },
  "oklch": {
    "l": 0.61429,
    "c": 0.18385,
    "h": 262.1
  },
  "luminance": 0.22466
}

Semantic roles & 50–950 ramp

primary

#437EF1

secondary

#E9D3A7

accent

#9703E3

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #437EF1

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

Preview Lab → · Contrast checker → · Palette generator →