#4271C0#4271C0

#4271C0 is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.4% C 0.134 H 260.2°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#4271C0
RGB	rgb(66, 113, 192)
HSL	hsl(218, 50%, 51%)
HSV	hsv(218, 66%, 75%)
CMYK	cmyk(65.6%, 41.1%, 0%, 24.7%)
CIE-LAB	lab(47.97, 9.59, -46.20)
CIE-LCH	lch(47.97, 47.18, 281.72°)
OKLab	oklab(55.44% -0.0228 -0.1317)
OKLCH	oklch(55.44% 0.134 260.2)
XYZ	xyz(17.6629, 16.7726, 52.1655)
Luminance	0.1677 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271C0 #C09142

analogous

#42B0C0 #4271C0 #5242C0

triadic

#4271C0 #C04271 #71C042

tetradic

#4271C0 #C042B0 #C09142 #42C052

square

#4271C0 #C042B0 #C09142 #42C052

split-complementary

#4271C0 #C05242 #B0C042

monochromatic

#223B66 #315694 #4271C0 #7093CF #9EB6DF

Accessibility & contrast

On white

4.82

#4271C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#4271C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4271C0

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271C0	#FFFFFF	#000000	##FFFFFF
##4271C0	1.00	4.82	4.35	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D78C3

Deuteranopia (green-blind)

#3A6CBE

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4271c0;
/* rgb */ color: rgb(66, 113, 192);
/* oklch */ color: oklch(55.4% 0.134 260.2);

Tailwind

colors: {
  custom: {
    50: '#8399d3',
    500: '#4271c0',
    950: '#000000',
  },
}

SCSS

$custom: #4271c0;
$custom-light: #8399d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4271c0",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 192
  },
  "hsl": {
    "h": 217.619,
    "s": 50,
    "l": 50.588
  },
  "oklch": {
    "l": 0.55439,
    "c": 0.13362,
    "h": 260.2
  },
  "luminance": 0.16774
}

Semantic roles & 50–950 ramp

primary

#4271C0

secondary

#CBB693

accent

#A64EDA

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #4271C0

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

Preview Lab → · Contrast checker → · Palette generator →