#4570BC#4570BC

#4570BC is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.1% C 0.128 H 261.0°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#4570BC
RGB	rgb(69, 112, 188)
HSL	hsl(218, 47%, 50%)
HSV	hsv(218, 63%, 74%)
CMYK	cmyk(63.3%, 40.4%, 0%, 26.3%)
CIE-LAB	lab(47.60, 9.34, -44.47)
CIE-LCH	lch(47.60, 45.44, 281.86°)
OKLab	oklab(55.12% -0.0201 -0.1266)
OKLCH	oklch(55.12% 0.128 261)
XYZ	xyz(17.3223, 16.4828, 49.8358)
Luminance	0.1648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4570BC #BC9145

analogous

#45ACBC #4570BC #5545BC

triadic

#4570BC #BC4570 #70BC45

tetradic

#4570BC #BC45AC #BC9145 #45BC55

square

#4570BC #BC45AC #BC9145 #45BC55

split-complementary

#4570BC #BC5545 #ACBC45

monochromatic

#243B63 #345590 #4570BC #7293CC #9FB5DC

Accessibility & contrast

On white

4.89

#4570BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#4570BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4570BC

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4570BC	#FFFFFF	#000000	##FFFFFF
##4570BC	1.00	4.89	4.30	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77BF

Deuteranopia (green-blind)

#3D6CBA

Tritanopia (blue-blind)

#00818D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4570bc;
/* rgb */ color: rgb(69, 112, 188);
/* oklch */ color: oklch(55.1% 0.128 261.0);

Tailwind

colors: {
  custom: {
    50: '#8498d0',
    500: '#4570bc',
    950: '#000000',
  },
}

SCSS

$custom: #4570bc;
$custom-light: #8498d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4570bc",
  "rgb": {
    "r": 69,
    "g": 112,
    "b": 188
  },
  "hsl": {
    "h": 218.319,
    "s": 47.036,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55117,
    "c": 0.12814,
    "h": 261
  },
  "luminance": 0.16484
}

Semantic roles & 50–950 ramp

primary

#4570BC

secondary

#C9B694

accent

#A651D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4570BC

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

Preview Lab → · Contrast checker → · Palette generator →