#4271CA#4271CA

#4271CA is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.1% C 0.147 H 261.9°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4271CA
RGB	rgb(66, 113, 202)
HSL	hsl(219, 56%, 53%)
HSV	hsv(219, 67%, 79%)
CMYK	cmyk(67.3%, 44.1%, 0%, 20.8%)
CIE-LAB	lab(48.55, 13.14, -51.02)
CIE-LCH	lch(48.55, 52.68, 284.44°)
OKLab	oklab(56.07% -0.0209 -0.1458)
OKLCH	oklch(56.07% 0.147 261.9)
XYZ	xyz(18.8088, 17.2309, 58.2003)
Luminance	0.1723 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271CA #CA9B42

analogous

#42B5CA #4271CA #5742CA

triadic

#4271CA #CA4271 #71CA42

tetradic

#4271CA #CA42B5 #CA9B42 #42CA57

square

#4271CA #CA42B5 #CA9B42 #42CA57

split-complementary

#4271CA #CA5742 #B5CA42

monochromatic

#203C72 #2D55A2 #4271CA #7295D7 #A2B9E5

Accessibility & contrast

On white

4.72

#4271CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#4271CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4271CA

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271CA	#FFFFFF	#000000	##FFFFFF
##4271CA	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#467ACD

Deuteranopia (green-blind)

#2E6DC8

Tritanopia (blue-blind)

#008693

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4271ca;
/* rgb */ color: rgb(66, 113, 202);
/* oklch */ color: oklch(56.1% 0.147 261.9);

Tailwind

colors: {
  custom: {
    50: '#8599db',
    500: '#4271ca',
    950: '#000000',
  },
}

SCSS

$custom: #4271ca;
$custom-light: #8599db;
$custom-dark: #000000;

JSON

{
  "hex": "#4271ca",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 202
  },
  "hsl": {
    "h": 219.265,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.56072,
    "c": 0.1473,
    "h": 261.9
  },
  "luminance": 0.17233
}

Semantic roles & 50–950 ramp

primary

#4271CA

secondary

#D1BD96

accent

#AB48DF

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4271CA

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

Preview Lab → · Contrast checker → · Palette generator →