#4B70BB#4B70BB

#4B70BB is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.4% C 0.124 H 263.1°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#4B70BB
RGB	rgb(75, 112, 187)
HSL	hsl(220, 45%, 51%)
HSV	hsv(220, 60%, 73%)
CMYK	cmyk(59.9%, 40.1%, 0%, 26.7%)
CIE-LAB	lab(47.84, 10.14, -43.49)
CIE-LCH	lch(47.84, 44.66, 283.13°)
OKLab	oklab(55.37% -0.0149 -0.1236)
OKLCH	oklch(55.37% 0.124 263.1)
XYZ	xyz(17.6624, 16.6705, 49.2910)
Luminance	0.1667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B70BB #BB964B

analogous

#4BA8BB #4B70BB #5E4BBB

triadic

#4B70BB #BB4B70 #70BB4B

tetradic

#4B70BB #BB4BA8 #BB964B #4BBB5E

square

#4B70BB #BB4BA8 #BB964B #4BBB5E

split-complementary

#4B70BB #BB5E4B #A8BB4B

monochromatic

#263B65 #375592 #4B70BB #7793CC #A4B7DD

Accessibility & contrast

On white

4.84

#4B70BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#4B70BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B70BB

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B70BB	#FFFFFF	#000000	##FFFFFF
##4B70BB	1.00	4.84	4.33	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5077BE

Deuteranopia (green-blind)

#406DB9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4b70bb;
/* rgb */ color: rgb(75, 112, 187);
/* oklch */ color: oklch(55.4% 0.124 263.1);

Tailwind

colors: {
  custom: {
    50: '#8798d0',
    500: '#4b70bb',
    950: '#000000',
  },
}

SCSS

$custom: #4b70bb;
$custom-light: #8798d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4b70bb",
  "rgb": {
    "r": 75,
    "g": 112,
    "b": 187
  },
  "hsl": {
    "h": 220.179,
    "s": 45.161,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55366,
    "c": 0.12449,
    "h": 263.1
  },
  "luminance": 0.16672
}

Semantic roles & 50–950 ramp

primary

#4B70BB

secondary

#CAB998

accent

#AA53D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4B70BB

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

Preview Lab → · Contrast checker → · Palette generator →