#437FE3#437FE3

#437FE3 is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.7% C 0.164 H 260.0°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#437FE3
RGB	rgb(67, 127, 227)
HSL	hsl(218, 74%, 58%)
HSV	hsv(218, 70%, 89%)
CMYK	cmyk(70.5%, 44.1%, 0%, 11%)
CIE-LAB	lab(53.94, 13.54, -56.55)
CIE-LCH	lch(53.94, 58.14, 283.46°)
OKLab	oklab(60.71% -0.0285 -0.1618)
OKLCH	oklch(60.71% 0.164 260)
XYZ	xyz(23.7642, 21.9156, 75.6359)
Luminance	0.2192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437FE3 #E3A743

analogous

#43CFE3 #437FE3 #5743E3

triadic

#437FE3 #E3437F #7FE343

tetradic

#437FE3 #E343CF #E3A743 #43E357

square

#437FE3 #E343CF #E3A743 #43E357

split-complementary

#437FE3 #E35743 #CFE343

monochromatic

#164695 #1E5FCB #437FE3 #78A3EB #AEC8F3

Accessibility & contrast

On white

3.90

#437FE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#437FE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437FE3

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437FE3	#FFFFFF	#000000	##000000
##437FE3	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D89E7

Deuteranopia (green-blind)

#2F7AE1

Tritanopia (blue-blind)

#0096A6

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #437fe3;
/* rgb */ color: rgb(67, 127, 227);
/* oklch */ color: oklch(60.7% 0.164 260.0);

Tailwind

colors: {
  custom: {
    50: '#89a3ec',
    500: '#437fe3',
    950: '#000000',
  },
}

SCSS

$custom: #437fe3;
$custom-light: #89a3ec;
$custom-dark: #000000;

JSON

{
  "hex": "#437fe3",
  "rgb": {
    "r": 67,
    "g": 127,
    "b": 227
  },
  "hsl": {
    "h": 217.5,
    "s": 74.074,
    "l": 57.647
  },
  "oklch": {
    "l": 0.60712,
    "c": 0.1643,
    "h": 260
  },
  "luminance": 0.21918
}

Semantic roles & 50–950 ramp

primary

#437FE3

secondary

#E1C9A1

accent

#AB37F1

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #437FE3

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

Preview Lab → · Contrast checker → · Palette generator →