#4370E7#4370E7

#4370E7 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.9% C 0.187 H 265.3°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#4370E7
RGB	rgb(67, 112, 231)
HSL	hsl(224, 77%, 58%)
HSV	hsv(224, 71%, 91%)
CMYK	cmyk(71%, 51.5%, 0%, 9.4%)
CIE-LAB	lab(50.16, 24.28, -64.88)
CIE-LCH	lch(50.16, 69.27, 290.52°)
OKLab	oklab(57.9% -0.0152 -0.1866)
OKLCH	oklch(57.9% 0.187 265.3)
XYZ	xyz(22.5276, 18.5488, 77.9788)
Luminance	0.1855 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370E7 #E7BA43

analogous

#43C2E7 #4370E7 #6843E7

triadic

#4370E7 #E74370 #70E743

tetradic

#4370E7 #E743C2 #E7BA43 #43E768

square

#4370E7 #E743C2 #E7BA43 #43E768

split-complementary

#4370E7 #E76843 #C2E743

monochromatic

#14399C #1B4DD2 #4370E7 #7999EE #B0C3F5

Accessibility & contrast

On white

4.46

#4370E7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#4370E7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4370E7

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370E7	#FFFFFF	#000000	##000000
##4370E7	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#217FEB

Deuteranopia (green-blind)

#0070E5

Tritanopia (blue-blind)

#008DA1

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4370e7;
/* rgb */ color: rgb(67, 112, 231);
/* oklch */ color: oklch(57.9% 0.187 265.3);

Tailwind

colors: {
  custom: {
    50: '#8b98ef',
    500: '#4370e7',
    950: '#000000',
  },
}

SCSS

$custom: #4370e7;
$custom-light: #8b98ef;
$custom-dark: #000000;

JSON

{
  "hex": "#4370e7",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 231
  },
  "hsl": {
    "h": 223.537,
    "s": 77.358,
    "l": 58.431
  },
  "oklch": {
    "l": 0.57899,
    "c": 0.1872,
    "h": 265.3
  },
  "luminance": 0.18551
}

Semantic roles & 50–950 ramp

primary

#4370E7

secondary

#E3D2A2

accent

#BF34F4

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0D17

muted

#7E7E85

Preview Lab

Preview with #4370E7

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

Preview Lab → · Contrast checker → · Palette generator →