#4371D8#4371D8

#4371D8 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.0% C 0.166 H 263.8°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#4371D8
RGB	rgb(67, 113, 216)
HSL	hsl(221, 66%, 55%)
HSV	hsv(221, 69%, 85%)
CMYK	cmyk(69%, 47.7%, 0%, 15.3%)
CIE-LAB	lab(49.45, 18.29, -57.55)
CIE-LCH	lch(49.45, 60.39, 287.63°)
OKLab	oklab(57.05% -0.0178 -0.165)
OKLCH	oklch(57.05% 0.166 263.8)
XYZ	xyz(20.6102, 17.9593, 67.3327)
Luminance	0.1796 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4371D8 #D8AA43

analogous

#43BBD8 #4371D8 #6043D8

triadic

#4371D8 #D84371 #71D843

tetradic

#4371D8 #D843BB #D8AA43 #43D860

square

#4371D8 #D843BB #D8AA43 #43D860

split-complementary

#4371D8 #D86043 #BBD843

monochromatic

#1C3C85 #2653B8 #4371D8 #7697E3 #A8BEED

Accessibility & contrast

On white

4.57

#4371D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#4371D8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4371D8

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4371D8	#FFFFFF	#000000	##000000
##4371D8	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A7DDC

Deuteranopia (green-blind)

#126FD6

Tritanopia (blue-blind)

#00899A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4371d8;
/* rgb */ color: rgb(67, 113, 216);
/* oklch */ color: oklch(57.0% 0.166 263.8);

Tailwind

colors: {
  custom: {
    50: '#8899e5',
    500: '#4371d8',
    950: '#000000',
  },
}

SCSS

$custom: #4371d8;
$custom-light: #8899e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4371d8",
  "rgb": {
    "r": 67,
    "g": 113,
    "b": 216
  },
  "hsl": {
    "h": 221.477,
    "s": 65.639,
    "l": 55.49
  },
  "oklch": {
    "l": 0.57048,
    "c": 0.16597,
    "h": 263.8
  },
  "luminance": 0.17961
}

Semantic roles & 50–950 ramp

primary

#4371D8

secondary

#DAC79C

accent

#B43FE9

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4371D8

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

Preview Lab → · Contrast checker → · Palette generator →