#4070BB#4070BB

#4070BB is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.8% C 0.129 H 259.0°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#4070BB
RGB	rgb(64, 112, 187)
HSL	hsl(217, 49%, 49%)
HSV	hsv(217, 66%, 73%)
CMYK	cmyk(65.8%, 40.1%, 0%, 26.7%)
CIE-LAB	lab(47.32, 8.09, -44.36)
CIE-LCH	lch(47.32, 45.09, 280.34°)
OKLab	oklab(54.82% -0.0245 -0.1263)
OKLCH	oklch(54.82% 0.129 259)
XYZ	xyz(16.8750, 16.2645, 49.2541)
Luminance	0.1627 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4070BB #BB8B40

analogous

#40AEBB #4070BB #4D40BB

triadic

#4070BB #BB4070 #70BB40

tetradic

#4070BB #BB40AE #BB8B40 #40BB4D

square

#4070BB #BB40AE #BB8B40 #40BB4D

split-complementary

#4070BB #BB4D40 #AEBB40

monochromatic

#213960 #30558D #4070BB #6C91CD #99B3DC

Accessibility & contrast

On white

4.94

#4070BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#4070BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4070BB

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4070BB	#FFFFFF	#000000	##FFFFFF
##4070BB	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E76BE

Deuteranopia (green-blind)

#3C6BB9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #4070bb;
/* rgb */ color: rgb(64, 112, 187);
/* oklch */ color: oklch(54.8% 0.129 259.0);

Tailwind

colors: {
  custom: {
    50: '#8198d0',
    500: '#4070bb',
    950: '#000000',
  },
}

SCSS

$custom: #4070bb;
$custom-light: #8198d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4070bb",
  "rgb": {
    "r": 64,
    "g": 112,
    "b": 187
  },
  "hsl": {
    "h": 216.585,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.54819,
    "c": 0.12866,
    "h": 259
  },
  "luminance": 0.16266
}

Semantic roles & 50–950 ramp

primary

#4070BB

secondary

#C8B28F

accent

#A34FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #4070BB

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

Preview Lab → · Contrast checker → · Palette generator →