#437BD7#437BD7

#437BD7 is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.153 H 259.8°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#437BD7
RGB	rgb(67, 123, 215)
HSL	hsl(217, 65%, 55%)
HSV	hsv(217, 69%, 84%)
CMYK	cmyk(68.8%, 42.8%, 0%, 15.7%)
CIE-LAB	lab(52.13, 11.72, -52.68)
CIE-LCH	lch(52.13, 53.97, 282.54°)
OKLab	oklab(59.09% -0.027 -0.1505)
OKLCH	oklch(59.09% 0.153 259.8)
XYZ	xyz(21.6590, 20.2633, 67.0465)
Luminance	0.2027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437BD7 #D79F43

analogous

#43C5D7 #437BD7 #5543D7

triadic

#437BD7 #D7437B #7BD743

tetradic

#437BD7 #D743C5 #D79F43 #43D755

square

#437BD7 #D743C5 #D79F43 #43D755

split-complementary

#437BD7 #D75543 #C5D743

monochromatic

#1C4384 #275DB6 #437BD7 #759EE2 #A8C2EC

Accessibility & contrast

On white

4.16

#437BD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#437BD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437BD7

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437BD7	#FFFFFF	#000000	##000000
##437BD7	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F84DB

Deuteranopia (green-blind)

#3576D5

Tritanopia (blue-blind)

#00909E

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #437bd7;
/* rgb */ color: rgb(67, 123, 215);
/* oklch */ color: oklch(59.1% 0.153 259.8);

Tailwind

colors: {
  custom: {
    50: '#87a0e4',
    500: '#437bd7',
    950: '#000000',
  },
}

SCSS

$custom: #437bd7;
$custom-light: #87a0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#437bd7",
  "rgb": {
    "r": 67,
    "g": 123,
    "b": 215
  },
  "hsl": {
    "h": 217.297,
    "s": 64.912,
    "l": 55.294
  },
  "oklch": {
    "l": 0.59094,
    "c": 0.15293,
    "h": 259.8
  },
  "luminance": 0.20266
}

Semantic roles & 50–950 ramp

primary

#437BD7

secondary

#DAC29C

accent

#A840E8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E15

muted

#7D7E84

Preview Lab

Preview with #437BD7

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

Preview Lab → · Contrast checker → · Palette generator →