#4371D3#4371D3

#4371D3 is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.7% C 0.159 H 263.3°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#4371D3
RGB	rgb(67, 113, 211)
HSL	hsl(221, 62%, 55%)
HSV	hsv(221, 68%, 83%)
CMYK	cmyk(68.2%, 46.4%, 0%, 17.3%)
CIE-LAB	lab(49.14, 16.51, -55.21)
CIE-LCH	lch(49.14, 57.63, 286.64°)
OKLab	oklab(56.71% -0.0185 -0.1581)
OKLCH	oklch(56.71% 0.159 263.3)
XYZ	xyz(19.9736, 17.7047, 63.9801)
Luminance	0.1771 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4371D3 #D3A543

analogous

#43B9D3 #4371D3 #5D43D3

triadic

#4371D3 #D34371 #71D343

tetradic

#4371D3 #D343B9 #D3A543 #43D35D

square

#4371D3 #D343B9 #D3A543 #43D35D

split-complementary

#4371D3 #D35D43 #B9D343

monochromatic

#1E3C7E #2954B0 #4371D3 #7596DF #A6BCEA

Accessibility & contrast

On white

4.62

#4371D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#4371D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4371D3

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4371D3	#FFFFFF	#000000	##FFFFFF
##4371D3	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E7CD7

Deuteranopia (green-blind)

#206FD1

Tritanopia (blue-blind)

#008898

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4371d3;
/* rgb */ color: rgb(67, 113, 211);
/* oklch */ color: oklch(56.7% 0.159 263.3);

Tailwind

colors: {
  custom: {
    50: '#8799e1',
    500: '#4371d3',
    950: '#000000',
  },
}

SCSS

$custom: #4371d3;
$custom-light: #8799e1;
$custom-dark: #000000;

JSON

{
  "hex": "#4371d3",
  "rgb": {
    "r": 67,
    "g": 113,
    "b": 211
  },
  "hsl": {
    "h": 220.833,
    "s": 62.069,
    "l": 54.51
  },
  "oklch": {
    "l": 0.5671,
    "c": 0.15921,
    "h": 263.3
  },
  "luminance": 0.17707
}

Semantic roles & 50–950 ramp

primary

#4371D3

secondary

#D7C49A

accent

#B143E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0D0D15

muted

#7D7E83

Preview Lab

Preview with #4371D3

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

Preview Lab → · Contrast checker → · Palette generator →