#437BE1#437BE1

#437BE1 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.7% C 0.166 H 261.3°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#437BE1
RGB	rgb(67, 123, 225)
HSL	hsl(219, 72%, 57%)
HSV	hsv(219, 70%, 88%)
CMYK	cmyk(70.2%, 45.3%, 0%, 11.8%)
CIE-LAB	lab(52.72, 15.29, -57.37)
CIE-LCH	lch(52.72, 59.37, 284.92°)
OKLab	oklab(59.74% -0.0253 -0.1643)
OKLCH	oklch(59.74% 0.166 261.3)
XYZ	xyz(22.9834, 20.7930, 74.0218)
Luminance	0.2079 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437BE1 #E1A943

analogous

#43CAE1 #437BE1 #5A43E1

triadic

#437BE1 #E1437B #7BE143

tetradic

#437BE1 #E143CA #E1A943 #43E15A

square

#437BE1 #E143CA #E1A943 #43E15A

split-complementary

#437BE1 #E15A43 #CAE143

monochromatic

#174392 #205BC7 #437BE1 #78A0E9 #ADC5F2

Accessibility & contrast

On white

4.07

#437BE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#437BE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437BE1

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437BE1	#FFFFFF	#000000	##000000
##437BE1	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4786E5

Deuteranopia (green-blind)

#2677DF

Tritanopia (blue-blind)

#0093A3

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #437be1;
/* rgb */ color: rgb(67, 123, 225);
/* oklch */ color: oklch(59.7% 0.166 261.3);

Tailwind

colors: {
  custom: {
    50: '#89a0eb',
    500: '#437be1',
    950: '#000000',
  },
}

SCSS

$custom: #437be1;
$custom-light: #89a0eb;
$custom-dark: #000000;

JSON

{
  "hex": "#437be1",
  "rgb": {
    "r": 67,
    "g": 123,
    "b": 225
  },
  "hsl": {
    "h": 218.734,
    "s": 72.477,
    "l": 57.255
  },
  "oklch": {
    "l": 0.59738,
    "c": 0.16625,
    "h": 261.3
  },
  "luminance": 0.20795
}

Semantic roles & 50–950 ramp

primary

#437BE1

secondary

#E0C9A0

accent

#AE39EF

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #437BE1

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

Preview Lab → · Contrast checker → · Palette generator →