#436DCB#436DCB

#436DCB is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.3% C 0.153 H 264.0°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#436DCB
RGB	rgb(67, 109, 203)
HSL	hsl(221, 57%, 53%)
HSV	hsv(221, 67%, 80%)
CMYK	cmyk(67%, 46.3%, 0%, 20.4%)
CIE-LAB	lab(47.55, 16.16, -53.20)
CIE-LCH	lch(47.55, 55.60, 286.90°)
OKLab	oklab(55.33% -0.0161 -0.1523)
OKLCH	oklch(55.33% 0.153 264)
XYZ	xyz(18.5591, 16.4406, 58.6836)
Luminance	0.1644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#436DCB #CBA143

analogous

#43B1CB #436DCB #5D43CB

triadic

#436DCB #CB436D #6DCB43

tetradic

#436DCB #CB43B1 #CBA143 #43CB5D

square

#436DCB #CB43B1 #CBA143 #43CB5D

split-complementary

#436DCB #CB5D43 #B1CB43

monochromatic

#203A74 #2D52A4 #436DCB #7392D8 #A3B7E6

Accessibility & contrast

On white

4.90

#436DCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#436DCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #436DCB

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##436DCB	#FFFFFF	#000000	##FFFFFF
##436DCB	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D77CF

Deuteranopia (green-blind)

#226BC9

Tritanopia (blue-blind)

#008392

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #436dcb;
/* rgb */ color: rgb(67, 109, 203);
/* oklch */ color: oklch(55.3% 0.153 264.0);

Tailwind

colors: {
  custom: {
    50: '#8696db',
    500: '#436dcb',
    950: '#000000',
  },
}

SCSS

$custom: #436dcb;
$custom-light: #8696db;
$custom-dark: #000000;

JSON

{
  "hex": "#436dcb",
  "rgb": {
    "r": 67,
    "g": 109,
    "b": 203
  },
  "hsl": {
    "h": 221.471,
    "s": 56.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.55334,
    "c": 0.15311,
    "h": 264
  },
  "luminance": 0.16442
}

Semantic roles & 50–950 ramp

primary

#436DCB

secondary

#D2C098

accent

#B148E0

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #436DCB

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

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