#4371D7#4371D7

#4371D7 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.0% C 0.165 H 263.7°. Best body text is #000000 at 4.58:1 contrast (WCAG AA passes).

Color values

HEX	#4371D7
RGB	rgb(67, 113, 215)
HSL	hsl(221, 65%, 55%)
HSV	hsv(221, 69%, 84%)
CMYK	cmyk(68.8%, 47.4%, 0%, 15.7%)
CIE-LAB	lab(49.38, 17.93, -57.09)
CIE-LCH	lch(49.38, 59.84, 287.44°)
OKLab	oklab(56.98% -0.018 -0.1636)
OKLCH	oklch(56.98% 0.165 263.7)
XYZ	xyz(20.4813, 17.9078, 66.6540)
Luminance	0.1791 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4371D7 #D7A943

analogous

#43BBD7 #4371D7 #5F43D7

triadic

#4371D7 #D74371 #71D743

tetradic

#4371D7 #D743BB #D7A943 #43D75F

square

#4371D7 #D743BB #D7A943 #43D75F

split-complementary

#4371D7 #D75F43 #BBD743

monochromatic

#1C3C84 #2753B6 #4371D7 #7597E2 #A8BDEC

Accessibility & contrast

On white

4.58

#4371D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#4371D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4371D7

4.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4371D7	#FFFFFF	#000000	##000000
##4371D7	1.00	4.58	4.58	4.58
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.58	21.00	1.00	1.00
##000000	4.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7DDB

Deuteranopia (green-blind)

#166FD5

Tritanopia (blue-blind)

#00899A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4371d7;
/* rgb */ color: rgb(67, 113, 215);
/* oklch */ color: oklch(57.0% 0.165 263.7);

Tailwind

colors: {
  custom: {
    50: '#8899e4',
    500: '#4371d7',
    950: '#000000',
  },
}

SCSS

$custom: #4371d7;
$custom-light: #8899e4;
$custom-dark: #000000;

JSON

{
  "hex": "#4371d7",
  "rgb": {
    "r": 67,
    "g": 113,
    "b": 215
  },
  "hsl": {
    "h": 221.351,
    "s": 64.912,
    "l": 55.294
  },
  "oklch": {
    "l": 0.56979,
    "c": 0.16462,
    "h": 263.7
  },
  "luminance": 0.1791
}

Semantic roles & 50–950 ramp

primary

#4371D7

secondary

#DAC79C

accent

#B440E8

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4371D7

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

Preview Lab → · Contrast checker → · Palette generator →