#4071BB#4071BB

#4071BB is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.0% C 0.128 H 258.5°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#4071BB
RGB	rgb(64, 113, 187)
HSL	hsl(216, 49%, 49%)
HSV	hsv(216, 66%, 73%)
CMYK	cmyk(65.8%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(47.61, 7.47, -43.90)
CIE-LCH	lch(47.61, 44.53, 279.66°)
OKLab	oklab(55.04% -0.0255 -0.1249)
OKLCH	oklch(55.04% 0.128 258.5)
XYZ	xyz(16.9859, 16.4864, 49.2911)
Luminance	0.1649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4071BB #BB8A40

analogous

#40AFBB #4071BB #4D40BB

triadic

#4071BB #BB4071 #71BB40

tetradic

#4071BB #BB40AF #BB8A40 #40BB4D

square

#4071BB #BB40AF #BB8A40 #40BB4D

split-complementary

#4071BB #BB4D40 #AFBB40

monochromatic

#213A60 #30558D #4071BB #6C92CD #99B4DC

Accessibility & contrast

On white

4.89

#4071BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#4071BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4071BB

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4071BB	#FFFFFF	#000000	##FFFFFF
##4071BB	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)

#5077BE

Deuteranopia (green-blind)

#3E6CB9

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4071bb;
/* rgb */ color: rgb(64, 113, 187);
/* oklch */ color: oklch(55.0% 0.128 258.5);

Tailwind

colors: {
  custom: {
    50: '#8199d0',
    500: '#4071bb',
    950: '#000000',
  },
}

SCSS

$custom: #4071bb;
$custom-light: #8199d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4071bb",
  "rgb": {
    "r": 64,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 216.098,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.55041,
    "c": 0.12753,
    "h": 258.5
  },
  "luminance": 0.16488
}

Semantic roles & 50–950 ramp

primary

#4071BB

secondary

#C8B18F

accent

#A24FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #4071BB

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

Preview Lab → · Contrast checker → · Palette generator →