#437BBF#437BBF

#437BBF is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.7% C 0.121 H 254.4°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#437BBF
RGB	rgb(67, 123, 191)
HSL	hsl(213, 49%, 51%)
HSV	hsv(213, 65%, 75%)
CMYK	cmyk(64.9%, 35.6%, 0%, 25.1%)
CIE-LAB	lab(50.83, 3.27, -41.09)
CIE-LCH	lch(50.83, 41.22, 274.55°)
OKLab	oklab(57.65% -0.0324 -0.1166)
OKLCH	oklch(57.65% 0.121 254.4)
XYZ	xyz(18.7983, 19.1190, 51.9798)
Luminance	0.1912 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437BBF #BF8743

analogous

#43B9BF #437BBF #4943BF

triadic

#437BBF #BF437B #7BBF43

tetradic

#437BBF #BF43B9 #BF8743 #43BF49

square

#437BBF #BF43B9 #BF8743 #43BF49

split-complementary

#437BBF #BF4943 #B9BF43

monochromatic

#224165 #325E93 #437BBF #719BCF #9EBBDE

Accessibility & contrast

On white

4.35

#437BBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#437BBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437BBF

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437BBF	#FFFFFF	#000000	##000000
##437BBF	1.00	4.35	4.82	4.82
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7FC2

Deuteranopia (green-blind)

#4C74BE

Tritanopia (blue-blind)

#008B94

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #437bbf;
/* rgb */ color: rgb(67, 123, 191);
/* oklch */ color: oklch(57.7% 0.121 254.4);

Tailwind

colors: {
  custom: {
    50: '#83a0d2',
    500: '#437bbf',
    950: '#000000',
  },
}

SCSS

$custom: #437bbf;
$custom-light: #83a0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#437bbf",
  "rgb": {
    "r": 67,
    "g": 123,
    "b": 191
  },
  "hsl": {
    "h": 212.903,
    "s": 49.206,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57653,
    "c": 0.12099,
    "h": 254.4
  },
  "luminance": 0.19121
}

Semantic roles & 50–950 ramp

primary

#437BBF

secondary

#CAB293

accent

#9B4FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #437BBF

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

Preview Lab → · Contrast checker → · Palette generator →