#4370D2#4370D2

#4370D2 is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.4% C 0.159 H 263.6°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#4370D2
RGB	rgb(67, 112, 210)
HSL	hsl(221, 61%, 54%)
HSV	hsv(221, 68%, 82%)
CMYK	cmyk(68.1%, 46.7%, 0%, 17.6%)
CIE-LAB	lab(48.80, 16.78, -55.18)
CIE-LCH	lch(48.80, 57.68, 286.91°)
OKLab	oklab(56.43% -0.0178 -0.158)
OKLCH	oklch(56.43% 0.159 263.6)
XYZ	xyz(19.7377, 17.4328, 63.2849)
Luminance	0.1744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370D2 #D2A543

analogous

#43B7D2 #4370D2 #5E43D2

triadic

#4370D2 #D24370 #70D243

tetradic

#4370D2 #D243B7 #D2A543 #43D25E

square

#4370D2 #D243B7 #D2A543 #43D25E

split-complementary

#4370D2 #D25E43 #B7D243

monochromatic

#1E3C7D #2A53AE #4370D2 #7496DE #A6BBEA

Accessibility & contrast

On white

4.68

#4370D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#4370D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4370D2

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370D2	#FFFFFF	#000000	##FFFFFF
##4370D2	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7BD6

Deuteranopia (green-blind)

#1E6ED0

Tritanopia (blue-blind)

#008797

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4370d2;
/* rgb */ color: rgb(67, 112, 210);
/* oklch */ color: oklch(56.4% 0.159 263.6);

Tailwind

colors: {
  custom: {
    50: '#8798e0',
    500: '#4370d2',
    950: '#000000',
  },
}

SCSS

$custom: #4370d2;
$custom-light: #8798e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4370d2",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 210
  },
  "hsl": {
    "h": 221.119,
    "s": 61.373,
    "l": 54.314
  },
  "oklch": {
    "l": 0.56433,
    "c": 0.15905,
    "h": 263.6
  },
  "luminance": 0.17435
}

Semantic roles & 50–950 ramp

primary

#4370D2

secondary

#D7C49A

accent

#B243E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4370D2

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

Preview Lab → · Contrast checker → · Palette generator →