#437BBB#437BBB

#437BBB is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.4% C 0.116 H 253.2°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#437BBB
RGB	rgb(67, 123, 187)
HSL	hsl(212, 47%, 50%)
HSV	hsv(212, 64%, 73%)
CMYK	cmyk(64.2%, 34.2%, 0%, 26.7%)
CIE-LAB	lab(50.62, 1.89, -39.12)
CIE-LCH	lch(50.62, 39.16, 272.76°)
OKLab	oklab(57.43% -0.0335 -0.1108)
OKLCH	oklch(57.43% 0.116 253.2)
XYZ	xyz(18.3641, 18.9453, 49.6931)
Luminance	0.1895 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#437BBB #BB8343

analogous

#43B7BB #437BBB #4743BB

triadic

#437BBB #BB437B #7BBB43

tetradic

#437BBB #BB43B7 #BB8343 #43BB47

square

#437BBB #BB43B7 #BB8343 #43BB47

split-complementary

#437BBB #BB4743 #B7BB43

monochromatic

#234061 #335D8E #437BBB #709BCC #9DBADC

Accessibility & contrast

On white

4.38

#437BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#437BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #437BBB

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##437BBB	#FFFFFF	#000000	##000000
##437BBB	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7FBE

Deuteranopia (green-blind)

#4F73BA

Tritanopia (blue-blind)

#008A92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #437bbb;
/* rgb */ color: rgb(67, 123, 187);
/* oklch */ color: oklch(57.4% 0.116 253.2);

Tailwind

colors: {
  custom: {
    50: '#83a0d0',
    500: '#437bbb',
    950: '#000000',
  },
}

SCSS

$custom: #437bbb;
$custom-light: #83a0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#437bbb",
  "rgb": {
    "r": 67,
    "g": 123,
    "b": 187
  },
  "hsl": {
    "h": 212,
    "s": 47.244,
    "l": 49.804
  },
  "oklch": {
    "l": 0.57428,
    "c": 0.11574,
    "h": 253.2
  },
  "luminance": 0.18947
}

Semantic roles & 50–950 ramp

primary

#437BBB

secondary

#C8AF92

accent

#9851D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #437BBB

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

Preview Lab → · Contrast checker → · Palette generator →