#4373D9#4373D9

#4373D9 is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.5% C 0.165 H 263.2°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#4373D9
RGB	rgb(67, 115, 217)
HSL	hsl(221, 66%, 56%)
HSV	hsv(221, 69%, 85%)
CMYK	cmyk(69.1%, 47%, 0%, 14.9%)
CIE-LAB	lab(50.05, 17.40, -57.15)
CIE-LCH	lch(50.05, 59.74, 286.93°)
OKLab	oklab(57.53% -0.0195 -0.1638)
OKLCH	oklch(57.53% 0.165 263.2)
XYZ	xyz(20.9654, 18.4624, 68.0909)
Luminance	0.1847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4373D9 #D9A943

analogous

#43BED9 #4373D9 #5E43D9

triadic

#4373D9 #D94373 #73D943

tetradic

#4373D9 #D943BE #D9A943 #43D95E

square

#4373D9 #D943BE #D9A943 #43D95E

split-complementary

#4373D9 #D95E43 #BED943

monochromatic

#1B3D86 #2555B9 #4373D9 #7699E3 #A9BFEE

Accessibility & contrast

On white

4.47

#4373D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#4373D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4373D9

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4373D9	#FFFFFF	#000000	##000000
##4373D9	1.00	4.47	4.69	4.69
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7EDD

Deuteranopia (green-blind)

#1971D7

Tritanopia (blue-blind)

#008B9B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4373d9;
/* rgb */ color: rgb(67, 115, 217);
/* oklch */ color: oklch(57.5% 0.165 263.2);

Tailwind

colors: {
  custom: {
    50: '#889ae5',
    500: '#4373d9',
    950: '#000000',
  },
}

SCSS

$custom: #4373d9;
$custom-light: #889ae5;
$custom-dark: #000000;

JSON

{
  "hex": "#4373d9",
  "rgb": {
    "r": 67,
    "g": 115,
    "b": 217
  },
  "hsl": {
    "h": 220.8,
    "s": 66.372,
    "l": 55.686
  },
  "oklch": {
    "l": 0.57531,
    "c": 0.16493,
    "h": 263.2
  },
  "luminance": 0.18465
}

Semantic roles & 50–950 ramp

primary

#4373D9

secondary

#DBC79D

accent

#B33FE9

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4373D9

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

Preview Lab → · Contrast checker → · Palette generator →