#4271CF#4271CF

#4271CF is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.4% C 0.154 H 262.5°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#4271CF
RGB	rgb(66, 113, 207)
HSL	hsl(220, 59%, 54%)
HSV	hsv(220, 68%, 81%)
CMYK	cmyk(68.1%, 45.4%, 0%, 18.8%)
CIE-LAB	lab(48.85, 14.92, -53.40)
CIE-LCH	lch(48.85, 55.44, 285.61°)
OKLab	oklab(56.4% -0.02 -0.1528)
OKLCH	oklch(56.4% 0.154 262.5)
XYZ	xyz(19.4104, 17.4715, 61.3688)
Luminance	0.1747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271CF #CFA042

analogous

#42B7CF #4271CF #5942CF

triadic

#4271CF #CF4271 #71CF42

tetradic

#4271CF #CF42B7 #CFA042 #42CF59

square

#4271CF #CF42B7 #CFA042 #42CF59

split-complementary

#4271CF #CF5942 #B7CF42

monochromatic

#1F3C78 #2B55A9 #4271CF #7396DB #A4BAE8

Accessibility & contrast

On white

4.67

#4271CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#4271CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4271CF

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271CF	#FFFFFF	#000000	##FFFFFF
##4271CF	1.00	4.67	4.49	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#427BD3

Deuteranopia (green-blind)

#276ECD

Tritanopia (blue-blind)

#008796

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4271cf;
/* rgb */ color: rgb(66, 113, 207);
/* oklch */ color: oklch(56.4% 0.154 262.5);

Tailwind

colors: {
  custom: {
    50: '#8699de',
    500: '#4271cf',
    950: '#000000',
  },
}

SCSS

$custom: #4271cf;
$custom-light: #8699de;
$custom-dark: #000000;

JSON

{
  "hex": "#4271cf",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 207
  },
  "hsl": {
    "h": 220,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.56399,
    "c": 0.15411,
    "h": 262.5
  },
  "luminance": 0.17473
}

Semantic roles & 50–950 ramp

primary

#4271CF

secondary

#D5C098

accent

#AE45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4271CF

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

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