#437CB0#437CB0

#437CB0 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 57.1% C 0.101 H 248.0°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#437CB0
RGB	rgb(67, 124, 176)
HSL	hsl(209, 45%, 48%)
HSV	hsv(209, 62%, 69%)
CMYK	cmyk(61.9%, 29.5%, 0%, 31%)
CIE-LAB	lab(50.38, -2.47, -33.15)
CIE-LCH	lch(50.38, 33.24, 265.74°)
OKLab	oklab(57.07% -0.0378 -0.0934)
OKLCH	oklch(57.07% 0.101 248)
XYZ	xyz(17.3560, 18.7415, 43.7687)
Luminance	0.1874 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437CB0 #B07743

analogous

#43B0AE #437CB0 #4345B0

triadic

#437CB0 #B0437C #7CB043

tetradic

#437CB0 #AE43B0 #B07743 #45B043

square

#437CB0 #AE43B0 #B07743 #45B043

split-complementary

#437CB0 #B04345 #B0AE43

monochromatic

#213E57 #325D84 #437CB0 #6A9AC6 #96B8D7

Accessibility & contrast

On white

4.42

#437CB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#437CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437CB0

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437CB0	#FFFFFF	#000000	##000000
##437CB0	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667EB2

Deuteranopia (green-blind)

#5773AF

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #437cb0;
/* rgb */ color: rgb(67, 124, 176);
/* oklch */ color: oklch(57.1% 0.101 248.0);

Tailwind

colors: {
  custom: {
    50: '#81a1c8',
    500: '#437cb0',
    950: '#000000',
  },
}

SCSS

$custom: #437cb0;
$custom-light: #81a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#437cb0",
  "rgb": {
    "r": 67,
    "g": 124,
    "b": 176
  },
  "hsl": {
    "h": 208.624,
    "s": 44.856,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57065,
    "c": 0.10077,
    "h": 248
  },
  "luminance": 0.18743
}

Semantic roles & 50–950 ramp

primary

#437CB0

secondary

#C3A68C

accent

#9153D5

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #437CB0

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

Preview Lab → · Contrast checker → · Palette generator →