#4271BE#4271BE

#4271BE is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.3% C 0.131 H 259.8°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#4271BE
RGB	rgb(66, 113, 190)
HSL	hsl(217, 49%, 50%)
HSV	hsv(217, 65%, 75%)
CMYK	cmyk(65.3%, 40.5%, 0%, 25.5%)
CIE-LAB	lab(47.86, 8.88, -45.23)
CIE-LCH	lch(47.86, 46.09, 281.11°)
OKLab	oklab(55.32% -0.0232 -0.1288)
OKLCH	oklch(55.32% 0.131 259.8)
XYZ	xyz(17.4429, 16.6845, 51.0064)
Luminance	0.1669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4271BE #BE8F42

analogous

#42AFBE #4271BE #5142BE

triadic

#4271BE #BE4271 #71BE42

tetradic

#4271BE #BE42AF #BE8F42 #42BE51

square

#4271BE #BE42AF #BE8F42 #42BE51

split-complementary

#4271BE #BE5142 #AFBE42

monochromatic

#223B63 #325691 #4271BE #7093CE #9DB5DD

Accessibility & contrast

On white

4.84

#4271BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#4271BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4271BE

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4271BE	#FFFFFF	#000000	##FFFFFF
##4271BE	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E78C1

Deuteranopia (green-blind)

#3C6CBC

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4271be;
/* rgb */ color: rgb(66, 113, 190);
/* oklch */ color: oklch(55.3% 0.131 259.8);

Tailwind

colors: {
  custom: {
    50: '#8399d2',
    500: '#4271be',
    950: '#000000',
  },
}

SCSS

$custom: #4271be;
$custom-light: #8399d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4271be",
  "rgb": {
    "r": 66,
    "g": 113,
    "b": 190
  },
  "hsl": {
    "h": 217.258,
    "s": 48.819,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55316,
    "c": 0.13088,
    "h": 259.8
  },
  "luminance": 0.16686
}

Semantic roles & 50–950 ramp

primary

#4271BE

secondary

#CAB592

accent

#A44FD8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4271BE

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

Preview Lab → · Contrast checker → · Palette generator →