#437CB1#437CB1

#437CB1 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.102 H 248.5°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#437CB1
RGB	rgb(67, 124, 177)
HSL	hsl(209, 45%, 48%)
HSV	hsv(209, 62%, 69%)
CMYK	cmyk(62.1%, 29.9%, 0%, 30.6%)
CIE-LAB	lab(50.43, -2.13, -33.65)
CIE-LCH	lch(50.43, 33.72, 266.38°)
OKLab	oklab(57.12% -0.0375 -0.0949)
OKLCH	oklch(57.12% 0.102 248.5)
XYZ	xyz(17.4553, 18.7813, 44.2917)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437CB1 #B17843

analogous

#43B1AF #437CB1 #4345B1

triadic

#437CB1 #B1437C #7CB143

tetradic

#437CB1 #AF43B1 #B17843 #45B143

square

#437CB1 #AF43B1 #B17843 #45B143

split-complementary

#437CB1 #B14345 #B1AF43

monochromatic

#213E58 #325D85 #437CB1 #6A9AC7 #97B8D8

Accessibility & contrast

On white

4.41

#437CB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#437CB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437CB1

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437CB1	#FFFFFF	#000000	##000000
##437CB1	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB3

Deuteranopia (green-blind)

#5673B0

Tritanopia (blue-blind)

#00888F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #437cb1;
/* rgb */ color: rgb(67, 124, 177);
/* oklch */ color: oklch(57.1% 0.102 248.5);

Tailwind

colors: {
  custom: {
    50: '#81a1c8',
    500: '#437cb1',
    950: '#000000',
  },
}

SCSS

$custom: #437cb1;
$custom-light: #81a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#437cb1",
  "rgb": {
    "r": 67,
    "g": 124,
    "b": 177
  },
  "hsl": {
    "h": 208.909,
    "s": 45.082,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57117,
    "c": 0.10202,
    "h": 248.5
  },
  "luminance": 0.18783
}

Semantic roles & 50–950 ramp

primary

#437CB1

secondary

#C3A78C

accent

#9253D5

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #437CB1

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

Preview Lab → · Contrast checker → · Palette generator →