#436FCB#436FCB

#436FCB is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.8% C 0.151 H 263.2°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#436FCB
RGB	rgb(67, 111, 203)
HSL	hsl(221, 57%, 53%)
HSV	hsv(221, 67%, 80%)
CMYK	cmyk(67%, 45.3%, 0%, 20.4%)
CIE-LAB	lab(48.10, 14.91, -52.31)
CIE-LCH	lch(48.10, 54.40, 285.91°)
OKLab	oklab(55.76% -0.018 -0.1496)
OKLCH	oklch(55.76% 0.151 263.2)
XYZ	xyz(18.7749, 16.8721, 58.7555)
Luminance	0.1687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#436FCB #CB9F43

analogous

#43B3CB #436FCB #5B43CB

triadic

#436FCB #CB436F #6FCB43

tetradic

#436FCB #CB43B3 #CB9F43 #43CB5B

square

#436FCB #CB43B3 #CB9F43 #43CB5B

split-complementary

#436FCB #CB5B43 #B3CB43

monochromatic

#203B74 #2D54A4 #436FCB #7394D8 #A3B8E6

Accessibility & contrast

On white

4.80

#436FCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#436FCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #436FCB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##436FCB	#FFFFFF	#000000	##FFFFFF
##436FCB	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4179CE

Deuteranopia (green-blind)

#286CC9

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #436fcb;
/* rgb */ color: rgb(67, 111, 203);
/* oklch */ color: oklch(55.8% 0.151 263.2);

Tailwind

colors: {
  custom: {
    50: '#8597db',
    500: '#436fcb',
    950: '#000000',
  },
}

SCSS

$custom: #436fcb;
$custom-light: #8597db;
$custom-dark: #000000;

JSON

{
  "hex": "#436fcb",
  "rgb": {
    "r": 67,
    "g": 111,
    "b": 203
  },
  "hsl": {
    "h": 220.588,
    "s": 56.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.55757,
    "c": 0.15071,
    "h": 263.2
  },
  "luminance": 0.16874
}

Semantic roles & 50–950 ramp

primary

#436FCB

secondary

#D2BF98

accent

#AF48E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #436FCB

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

Preview Lab → · Contrast checker → · Palette generator →