#437FB1#437FB1

#437FB1 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.8% C 0.100 H 245.8°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#437FB1
RGB	rgb(67, 127, 177)
HSL	hsl(207, 45%, 48%)
HSV	hsv(207, 62%, 69%)
CMYK	cmyk(62.1%, 28.2%, 0%, 30.6%)
CIE-LAB	lab(51.32, -3.90, -32.26)
CIE-LCH	lch(51.32, 32.50, 263.10°)
OKLab	oklab(57.82% -0.0408 -0.0908)
OKLCH	oklch(57.82% 0.1 245.8)
XYZ	xyz(17.8370, 19.5447, 44.4189)
Luminance	0.1955 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437FB1 #B17543

analogous

#43B1AC #437FB1 #4348B1

triadic

#437FB1 #B1437F #7FB143

tetradic

#437FB1 #AC43B1 #B17543 #48B143

square

#437FB1 #AC43B1 #B17543 #48B143

split-complementary

#437FB1 #B14348 #B1AC43

monochromatic

#213F58 #325F85 #437FB1 #6A9DC7 #97BAD8

Accessibility & contrast

On white

4.28

#437FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#437FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437FB1

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437FB1	#FFFFFF	#000000	##000000
##437FB1	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6980B3

Deuteranopia (green-blind)

#5A75B0

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #437fb1;
/* rgb */ color: rgb(67, 127, 177);
/* oklch */ color: oklch(57.8% 0.100 245.8);

Tailwind

colors: {
  custom: {
    50: '#81a3c8',
    500: '#437fb1',
    950: '#000000',
  },
}

SCSS

$custom: #437fb1;
$custom-light: #81a3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#437fb1",
  "rgb": {
    "r": 67,
    "g": 127,
    "b": 177
  },
  "hsl": {
    "h": 207.273,
    "s": 45.082,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57817,
    "c": 0.09957,
    "h": 245.8
  },
  "luminance": 0.19546
}

Semantic roles & 50–950 ramp

primary

#437FB1

secondary

#C3A58C

accent

#8E53D5

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #437FB1

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

Preview Lab → · Contrast checker → · Palette generator →