#4371BC#4371BC

#4371BC is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.2% C 0.128 H 259.7°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#4371BC
RGB	rgb(67, 113, 188)
HSL	hsl(217, 47%, 50%)
HSV	hsv(217, 64%, 74%)
CMYK	cmyk(64.4%, 39.9%, 0%, 26.3%)
CIE-LAB	lab(47.79, 8.35, -44.17)
CIE-LCH	lch(47.79, 44.96, 280.71°)
OKLab	oklab(55.24% -0.0228 -0.1257)
OKLCH	oklch(55.24% 0.128 259.7)
XYZ	xyz(17.2937, 16.6327, 49.8663)
Luminance	0.1663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4371BC #BC8E43

analogous

#43AEBC #4371BC #5143BC

triadic

#4371BC #BC4371 #71BC43

tetradic

#4371BC #BC43AE #BC8E43 #43BC51

square

#4371BC #BC43AE #BC8E43 #43BC51

split-complementary

#4371BC #BC5143 #AEBC43

monochromatic

#233B62 #33568F #4371BC #7093CC #9DB5DC

Accessibility & contrast

On white

4.85

#4371BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#4371BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4371BC

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4371BC	#FFFFFF	#000000	##FFFFFF
##4371BC	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5078BF

Deuteranopia (green-blind)

#3E6CBA

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4371bc;
/* rgb */ color: rgb(67, 113, 188);
/* oklch */ color: oklch(55.2% 0.128 259.7);

Tailwind

colors: {
  custom: {
    50: '#8399d0',
    500: '#4371bc',
    950: '#000000',
  },
}

SCSS

$custom: #4371bc;
$custom-light: #8399d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4371bc",
  "rgb": {
    "r": 67,
    "g": 113,
    "b": 188
  },
  "hsl": {
    "h": 217.19,
    "s": 47.451,
    "l": 50
  },
  "oklch": {
    "l": 0.55241,
    "c": 0.12776,
    "h": 259.7
  },
  "luminance": 0.16634
}

Semantic roles & 50–950 ramp

primary

#4371BC

secondary

#C9B492

accent

#A451D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4371BC

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

Preview Lab → · Contrast checker → · Palette generator →