#437FE1#437FE1

#437FE1 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.6% C 0.162 H 259.7°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#437FE1
RGB	rgb(67, 127, 225)
HSL	hsl(217, 72%, 57%)
HSV	hsv(217, 70%, 88%)
CMYK	cmyk(70.2%, 43.6%, 0%, 11.8%)
CIE-LAB	lab(53.82, 12.82, -55.61)
CIE-LCH	lch(53.82, 57.07, 282.99°)
OKLab	oklab(60.58% -0.0288 -0.1591)
OKLCH	oklch(60.58% 0.162 259.7)
XYZ	xyz(23.4898, 21.8058, 74.1905)
Luminance	0.2181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437FE1 #E1A543

analogous

#43CEE1 #437FE1 #5643E1

triadic

#437FE1 #E1437F #7FE143

tetradic

#437FE1 #E143CE #E1A543 #43E156

square

#437FE1 #E143CE #E1A543 #43E156

split-complementary

#437FE1 #E15643 #CEE143

monochromatic

#174692 #205FC7 #437FE1 #78A3E9 #ADC7F2

Accessibility & contrast

On white

3.92

#437FE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#437FE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437FE1

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437FE1	#FFFFFF	#000000	##000000
##437FE1	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F88E5

Deuteranopia (green-blind)

#327ADF

Tritanopia (blue-blind)

#0096A5

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #437fe1;
/* rgb */ color: rgb(67, 127, 225);
/* oklch */ color: oklch(60.6% 0.162 259.7);

Tailwind

colors: {
  custom: {
    50: '#89a3eb',
    500: '#437fe1',
    950: '#000000',
  },
}

SCSS

$custom: #437fe1;
$custom-light: #89a3eb;
$custom-dark: #000000;

JSON

{
  "hex": "#437fe1",
  "rgb": {
    "r": 67,
    "g": 127,
    "b": 225
  },
  "hsl": {
    "h": 217.215,
    "s": 72.477,
    "l": 57.255
  },
  "oklch": {
    "l": 0.60584,
    "c": 0.16167,
    "h": 259.7
  },
  "luminance": 0.21808
}

Semantic roles & 50–950 ramp

primary

#437FE1

secondary

#E0C8A0

accent

#AA39EF

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #437FE1

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

Preview Lab → · Contrast checker → · Palette generator →