#436CB5#436CB5

#436CB5 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 53.7% C 0.124 H 261.1°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#436CB5
RGB	rgb(67, 108, 181)
HSL	hsl(218, 46%, 49%)
HSV	hsv(218, 63%, 71%)
CMYK	cmyk(63%, 40.3%, 0%, 29%)
CIE-LAB	lab(45.98, 9.01, -43.00)
CIE-LCH	lch(45.98, 43.93, 281.84°)
OKLab	oklab(53.71% -0.0191 -0.1223)
OKLCH	oklch(53.71% 0.124 261.1)
XYZ	xyz(16.0149, 15.2531, 45.8073)
Luminance	0.1525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#436CB5 #B58C43

analogous

#43A5B5 #436CB5 #5343B5

triadic

#436CB5 #B5436C #6CB543

tetradic

#436CB5 #B543A5 #B58C43 #43B553

square

#436CB5 #B543A5 #B58C43 #43B553

split-complementary

#436CB5 #B55343 #A5B543

monochromatic

#22375C #325188 #436CB5 #6C8EC9 #99B0D9

Accessibility & contrast

On white

5.18

#436CB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#436CB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #436CB5

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##436CB5	#FFFFFF	#000000	##FFFFFF
##436CB5	1.00	5.18	4.05	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C73B8

Deuteranopia (green-blind)

#3B68B3

Tritanopia (blue-blind)

#007D88

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #436cb5;
/* rgb */ color: rgb(67, 108, 181);
/* oklch */ color: oklch(53.7% 0.124 261.1);

Tailwind

colors: {
  custom: {
    50: '#8295cb',
    500: '#436cb5',
    950: '#000000',
  },
}

SCSS

$custom: #436cb5;
$custom-light: #8295cb;
$custom-dark: #000000;

JSON

{
  "hex": "#436cb5",
  "rgb": {
    "r": 67,
    "g": 108,
    "b": 181
  },
  "hsl": {
    "h": 218.421,
    "s": 45.968,
    "l": 48.627
  },
  "oklch": {
    "l": 0.53709,
    "c": 0.12382,
    "h": 261.1
  },
  "luminance": 0.15255
}

Semantic roles & 50–950 ramp

primary

#436CB5

secondary

#C5B28F

accent

#A652D6

background

#F8F9FC

surface

#F0F1F8

border

#CBCBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #436CB5

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

Preview Lab → · Contrast checker → · Palette generator →