#4270BB#4270BB

#4270BB is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.9% C 0.128 H 259.7°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#4270BB
RGB	rgb(66, 112, 187)
HSL	hsl(217, 48%, 50%)
HSV	hsv(217, 65%, 73%)
CMYK	cmyk(64.7%, 40.1%, 0%, 26.7%)
CIE-LAB	lab(47.41, 8.44, -44.21)
CIE-LCH	lch(47.41, 45.01, 280.81°)
OKLab	oklab(54.91% -0.0229 -0.1258)
OKLCH	oklch(54.91% 0.128 259.7)
XYZ	xyz(17.0074, 16.3328, 49.2603)
Luminance	0.1633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4270BB #BB8D42

analogous

#42ADBB #4270BB #5142BB

triadic

#4270BB #BB4270 #70BB42

tetradic

#4270BB #BB42AD #BB8D42 #42BB51

square

#4270BB #BB42AD #BB8D42 #42BB51

split-complementary

#4270BB #BB5142 #ADBB42

monochromatic

#223A61 #32558E #4270BB #6E92CC #9CB4DC

Accessibility & contrast

On white

4.92

#4270BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#4270BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4270BB

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4270BB	#FFFFFF	#000000	##FFFFFF
##4270BB	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77BE

Deuteranopia (green-blind)

#3D6BB9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #4270bb;
/* rgb */ color: rgb(66, 112, 187);
/* oklch */ color: oklch(54.9% 0.128 259.7);

Tailwind

colors: {
  custom: {
    50: '#8298d0',
    500: '#4270bb',
    950: '#000000',
  },
}

SCSS

$custom: #4270bb;
$custom-light: #8298d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4270bb",
  "rgb": {
    "r": 66,
    "g": 112,
    "b": 187
  },
  "hsl": {
    "h": 217.19,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.54912,
    "c": 0.1279,
    "h": 259.7
  },
  "luminance": 0.16334
}

Semantic roles & 50–950 ramp

primary

#4270BB

secondary

#C8B391

accent

#A450D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #4270BB

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

Preview Lab → · Contrast checker → · Palette generator →