#3B81F2#3B81F2

#3B81F2 is a mid, vivid blue. Relative luminance 0.230; OKLCH L 61.8% C 0.184 H 259.6°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#3B81F2
RGB	rgb(59, 129, 242)
HSL	hsl(217, 88%, 59%)
HSV	hsv(217, 76%, 95%)
CMYK	cmyk(75.6%, 46.7%, 0%, 5.1%)
CIE-LAB	lab(55.11, 16.70, -63.04)
CIE-LCH	lch(55.11, 65.21, 284.84°)
OKLab	oklab(61.83% -0.0331 -0.181)
OKLCH	oklch(61.83% 0.184 259.6)
XYZ	xyz(25.6751, 23.0382, 87.0808)
Luminance	0.2304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B81F2 #F2AC3B

analogous

#3BDDF2 #3B81F2 #513BF2

triadic

#3B81F2 #F23B81 #81F23B

tetradic

#3B81F2 #F23BDD #F2AC3B #3BF251

square

#3B81F2 #F23BDD #F2AC3B #3BF251

split-complementary

#3B81F2 #F2513B #DDF23B

monochromatic

#0B47A7 #0F5FE1 #3B81F2 #74A6F6 #AECBFA

Accessibility & contrast

On white

3.74

#3B81F2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#3B81F2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B81F2

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B81F2	#FFFFFF	#000000	##000000
##3B81F2	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#438DF6

Deuteranopia (green-blind)

#097CF0

Tritanopia (blue-blind)

#009CAE

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #3b81f2;
/* rgb */ color: rgb(59, 129, 242);
/* oklch */ color: oklch(61.8% 0.184 259.6);

Tailwind

colors: {
  custom: {
    50: '#89a4f7',
    500: '#3b81f2',
    950: '#000000',
  },
}

SCSS

$custom: #3b81f2;
$custom-light: #89a4f7;
$custom-dark: #000000;

JSON

{
  "hex": "#3b81f2",
  "rgb": {
    "r": 59,
    "g": 129,
    "b": 242
  },
  "hsl": {
    "h": 217.049,
    "s": 87.56,
    "l": 59.02
  },
  "oklch": {
    "l": 0.6183,
    "c": 0.184,
    "h": 259.6
  },
  "luminance": 0.23041
}

Semantic roles & 50–950 ramp

primary

#3B81F2

secondary

#E8CDA0

accent

#AD2AFE

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0D0F17

muted

#7E7F85

Preview Lab

Preview with #3B81F2

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

Preview Lab → · Contrast checker → · Palette generator →