#437BCF#437BCF

#437BCF is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.6% C 0.142 H 258.4°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#437BCF
RGB	rgb(67, 123, 207)
HSL	hsl(216, 59%, 54%)
HSV	hsv(216, 68%, 81%)
CMYK	cmyk(67.6%, 40.6%, 0%, 18.8%)
CIE-LAB	lab(51.68, 8.88, -48.87)
CIE-LCH	lch(51.68, 49.67, 280.30°)
OKLab	oklab(58.6% -0.0287 -0.1393)
OKLCH	oklch(58.6% 0.142 258.4)
XYZ	xyz(20.6561, 19.8621, 61.7646)
Luminance	0.1986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437BCF #CF9743

analogous

#43C1CF #437BCF #5143CF

triadic

#437BCF #CF437B #7BCF43

tetradic

#437BCF #CF43C1 #CF9743 #43CF51

square

#437BCF #CF43C1 #CF9743 #43CF51

split-complementary

#437BCF #CF5143 #C1CF43

monochromatic

#1F4379 #2B5EAA #437BCF #749DDB #A5BFE8

Accessibility & contrast

On white

4.22

#437BCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#437BCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437BCF

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437BCF	#FFFFFF	#000000	##000000
##437BCF	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5482D2

Deuteranopia (green-blind)

#3E75CD

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #437bcf;
/* rgb */ color: rgb(67, 123, 207);
/* oklch */ color: oklch(58.6% 0.142 258.4);

Tailwind

colors: {
  custom: {
    50: '#86a0de',
    500: '#437bcf',
    950: '#000000',
  },
}

SCSS

$custom: #437bcf;
$custom-light: #86a0de;
$custom-dark: #000000;

JSON

{
  "hex": "#437bcf",
  "rgb": {
    "r": 67,
    "g": 123,
    "b": 207
  },
  "hsl": {
    "h": 216,
    "s": 59.322,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58597,
    "c": 0.14225,
    "h": 258.4
  },
  "luminance": 0.19864
}

Semantic roles & 50–950 ramp

primary

#437BCF

secondary

#D5BD99

accent

#A445E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #437BCF

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

Preview Lab → · Contrast checker → · Palette generator →