#4370D0#4370D0

#4370D0 is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.3% C 0.156 H 263.4°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#4370D0
RGB	rgb(67, 112, 208)
HSL	hsl(221, 60%, 54%)
HSV	hsv(221, 68%, 82%)
CMYK	cmyk(67.8%, 46.2%, 0%, 18.4%)
CIE-LAB	lab(48.68, 16.06, -54.24)
CIE-LCH	lch(48.68, 56.57, 286.50°)
OKLab	oklab(56.3% -0.0181 -0.1553)
OKLCH	oklch(56.3% 0.156 263.4)
XYZ	xyz(19.4901, 17.3338, 61.9809)
Luminance	0.1734 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370D0 #D0A343

analogous

#43B7D0 #4370D0 #5D43D0

triadic

#4370D0 #D04370 #70D043

tetradic

#4370D0 #D043B7 #D0A343 #43D05D

square

#4370D0 #D043B7 #D0A343 #43D05D

split-complementary

#4370D0 #D05D43 #B7D043

monochromatic

#1F3C7A #2B54AB #4370D0 #7495DC #A5BAE8

Accessibility & contrast

On white

4.70

#4370D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#4370D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4370D0

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370D0	#FFFFFF	#000000	##FFFFFF
##4370D0	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7BD4

Deuteranopia (green-blind)

#226ECE

Tritanopia (blue-blind)

#008696

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4370d0;
/* rgb */ color: rgb(67, 112, 208);
/* oklch */ color: oklch(56.3% 0.156 263.4);

Tailwind

colors: {
  custom: {
    50: '#8698df',
    500: '#4370d0',
    950: '#000000',
  },
}

SCSS

$custom: #4370d0;
$custom-light: #8698df;
$custom-dark: #000000;

JSON

{
  "hex": "#4370d0",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 208
  },
  "hsl": {
    "h": 220.851,
    "s": 60,
    "l": 53.922
  },
  "oklch": {
    "l": 0.56299,
    "c": 0.15633,
    "h": 263.4
  },
  "luminance": 0.17336
}

Semantic roles & 50–950 ramp

primary

#4370D0

secondary

#D5C299

accent

#B145E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4370D0

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

Preview Lab → · Contrast checker → · Palette generator →