#4070CB#4070CB

#4070CB is a mid, vivid blue. Relative luminance 0.170; OKLCH L 55.8% C 0.151 H 261.8°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#4070CB
RGB	rgb(64, 112, 203)
HSL	hsl(219, 57%, 52%)
HSV	hsv(219, 68%, 80%)
CMYK	cmyk(68.5%, 44.8%, 0%, 20.4%)
CIE-LAB	lab(48.25, 13.81, -52.08)
CIE-LCH	lch(48.25, 53.88, 284.85°)
OKLab	oklab(55.83% -0.0214 -0.149)
OKLCH	oklch(55.83% 0.151 261.8)
XYZ	xyz(18.6842, 16.9882, 58.7827)
Luminance	0.1699 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4070CB #CB9B40

analogous

#40B5CB #4070CB #5640CB

triadic

#4070CB #CB4070 #70CB40

tetradic

#4070CB #CB40B5 #CB9B40 #40CB56

square

#4070CB #CB40B5 #CB9B40 #40CB56

split-complementary

#4070CB #CB5640 #B5CB40

monochromatic

#1F3C72 #2C55A2 #4070CB #7094D8 #A0B8E5

Accessibility & contrast

On white

4.77

#4070CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#4070CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4070CB

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4070CB	#FFFFFF	#000000	##FFFFFF
##4070CB	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4379CE

Deuteranopia (green-blind)

#296DC9

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4070cb;
/* rgb */ color: rgb(64, 112, 203);
/* oklch */ color: oklch(55.8% 0.151 261.8);

Tailwind

colors: {
  custom: {
    50: '#8498db',
    500: '#4070cb',
    950: '#000000',
  },
}

SCSS

$custom: #4070cb;
$custom-light: #8498db;
$custom-dark: #000000;

JSON

{
  "hex": "#4070cb",
  "rgb": {
    "r": 64,
    "g": 112,
    "b": 203
  },
  "hsl": {
    "h": 219.281,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.55833,
    "c": 0.15051,
    "h": 261.8
  },
  "luminance": 0.1699
}

Semantic roles & 50–950 ramp

primary

#4070CB

secondary

#D2BD95

accent

#AC47E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4070CB

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

Preview Lab → · Contrast checker → · Palette generator →