#4370DA#4370DA

#4370DA is a mid, vivid blue. Relative luminance 0.178; OKLCH L 57.0% C 0.170 H 264.4°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#4370DA
RGB	rgb(67, 112, 218)
HSL	hsl(222, 67%, 56%)
HSV	hsv(222, 69%, 85%)
CMYK	cmyk(69.3%, 48.6%, 0%, 14.5%)
CIE-LAB	lab(49.30, 19.63, -58.92)
CIE-LCH	lch(49.30, 62.10, 288.43°)
OKLab	oklab(56.98% -0.0167 -0.169)
OKLCH	oklch(56.98% 0.17 264.4)
XYZ	xyz(20.7593, 17.8415, 68.6658)
Luminance	0.1784 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4370DA #DAAD43

analogous

#43BBDA #4370DA #6143DA

triadic

#4370DA #DA4370 #70DA43

tetradic

#4370DA #DA43BB #DAAD43 #43DA61

square

#4370DA #DA43BB #DAAD43 #43DA61

split-complementary

#4370DA #DA6143 #BBDA43

monochromatic

#1B3B88 #2552BB #4370DA #7697E4 #A9BEEE

Accessibility & contrast

On white

4.60

#4370DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#4370DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4370DA

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4370DA	#FFFFFF	#000000	##FFFFFF
##4370DA	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#357DDE

Deuteranopia (green-blind)

#016FD8

Tritanopia (blue-blind)

#00899A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4370da;
/* rgb */ color: rgb(67, 112, 218);
/* oklch */ color: oklch(57.0% 0.170 264.4);

Tailwind

colors: {
  custom: {
    50: '#8898e6',
    500: '#4370da',
    950: '#000000',
  },
}

SCSS

$custom: #4370da;
$custom-light: #8898e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4370da",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 218
  },
  "hsl": {
    "h": 222.119,
    "s": 67.111,
    "l": 55.882
  },
  "oklch": {
    "l": 0.56979,
    "c": 0.16986,
    "h": 264.4
  },
  "luminance": 0.17844
}

Semantic roles & 50–950 ramp

primary

#4370DA

secondary

#DCC99D

accent

#B73EEA

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4370DA

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

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