#4070BC#4070BC

#4070BC is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.9% C 0.130 H 259.2°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#4070BC
RGB	rgb(64, 112, 188)
HSL	hsl(217, 49%, 49%)
HSV	hsv(217, 66%, 74%)
CMYK	cmyk(66%, 40.4%, 0%, 26.3%)
CIE-LAB	lab(47.38, 8.45, -44.85)
CIE-LCH	lch(47.38, 45.64, 280.67°)
OKLab	oklab(54.88% -0.0243 -0.1277)
OKLCH	oklch(54.88% 0.13 259.2)
XYZ	xyz(16.9824, 16.3075, 49.8199)
Luminance	0.1631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4070BC #BC8C40

analogous

#40AEBC #4070BC #4E40BC

triadic

#4070BC #BC4070 #70BC40

tetradic

#4070BC #BC40AE #BC8C40 #40BC4E

square

#4070BC #BC40AE #BC8C40 #40BC4E

split-complementary

#4070BC #BC4E40 #AEBC40

monochromatic

#213A61 #30558E #4070BC #6C92CD #9AB4DD

Accessibility & contrast

On white

4.93

#4070BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#4070BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4070BC

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4070BC	#FFFFFF	#000000	##FFFFFF
##4070BC	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77BF

Deuteranopia (green-blind)

#3B6BBA

Tritanopia (blue-blind)

#00818D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #4070bc;
/* rgb */ color: rgb(64, 112, 188);
/* oklch */ color: oklch(54.9% 0.130 259.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#4070bc",
  "rgb": {
    "r": 64,
    "g": 112,
    "b": 188
  },
  "hsl": {
    "h": 216.774,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.5488,
    "c": 0.13003,
    "h": 259.2
  },
  "luminance": 0.16309
}

Semantic roles & 50–950 ramp

primary

#4070BC

secondary

#C9B28F

accent

#A34FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #4070BC

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

Preview Lab → · Contrast checker → · Palette generator →