#4170BB#4170BB

#4170BB is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.9% C 0.128 H 259.4°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#4170BB
RGB	rgb(65, 112, 187)
HSL	hsl(217, 48%, 49%)
HSV	hsv(217, 65%, 73%)
CMYK	cmyk(65.2%, 40.1%, 0%, 26.7%)
CIE-LAB	lab(47.36, 8.27, -44.28)
CIE-LCH	lch(47.36, 45.05, 280.57°)
OKLab	oklab(54.86% -0.0237 -0.1261)
OKLCH	oklch(54.86% 0.128 259.4)
XYZ	xyz(16.9406, 16.2984, 49.2572)
Luminance	0.1630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4170BB #BB8C41

analogous

#41ADBB #4170BB #4F41BB

triadic

#4170BB #BB4170 #70BB41

tetradic

#4170BB #BB41AD #BB8C41 #41BB4F

square

#4170BB #BB41AD #BB8C41 #41BB4F

split-complementary

#4170BB #BB4F41 #ADBB41

monochromatic

#213A60 #31558E #4170BB #6D92CC #9AB4DC

Accessibility & contrast

On white

4.93

#4170BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#4170BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4170BB

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4170BB	#FFFFFF	#000000	##FFFFFF
##4170BB	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)

#4E76BE

Deuteranopia (green-blind)

#3C6BB9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #4170bb;
/* rgb */ color: rgb(65, 112, 187);
/* oklch */ color: oklch(54.9% 0.128 259.4);

Tailwind

colors: {
  custom: {
    50: '#8298d0',
    500: '#4170bb',
    950: '#000000',
  },
}

SCSS

$custom: #4170bb;
$custom-light: #8298d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4170bb",
  "rgb": {
    "r": 65,
    "g": 112,
    "b": 187
  },
  "hsl": {
    "h": 216.885,
    "s": 48.413,
    "l": 49.412
  },
  "oklch": {
    "l": 0.54865,
    "c": 0.12829,
    "h": 259.4
  },
  "luminance": 0.163
}

Semantic roles & 50–950 ramp

primary

#4170BB

secondary

#C8B290

accent

#A450D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #4170BB

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

Preview Lab → · Contrast checker → · Palette generator →