#3B81BF#3B81BF

#3B81BF is a mid, moderate cyan. Relative luminance 0.204; OKLCH L 58.7% C 0.119 H 248.1°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#3B81BF
RGB	rgb(59, 129, 191)
HSL	hsl(208, 53%, 49%)
HSV	hsv(208, 69%, 75%)
CMYK	cmyk(69.1%, 32.5%, 0%, 25.1%)
CIE-LAB	lab(52.28, -1.66, -38.83)
CIE-LCH	lch(52.28, 38.86, 267.55°)
OKLab	oklab(58.71% -0.0443 -0.11)
OKLCH	oklch(58.71% 0.119 248.1)
XYZ	xyz(19.0543, 20.3899, 52.2116)
Luminance	0.2039 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B81BF #BF793B

analogous

#3BBFBB #3B81BF #3B3FBF

triadic

#3B81BF #BF3B81 #81BF3B

tetradic

#3B81BF #BB3BBF #BF793B #3FBF3B

square

#3B81BF #BB3BBF #BF793B #3FBF3B

split-complementary

#3B81BF #BF3B3F #BFBB3B

monochromatic

#1E4261 #2D6190 #3B81BF #679FD0 #96BCDF

Accessibility & contrast

On white

4.14

#3B81BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#3B81BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B81BF

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B81BF	#FFFFFF	#000000	##000000
##3B81BF	1.00	4.14	5.08	5.08
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6584C2

Deuteranopia (green-blind)

#5377BE

Tritanopia (blue-blind)

#009097

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3b81bf;
/* rgb */ color: rgb(59, 129, 191);
/* oklch */ color: oklch(58.7% 0.119 248.1);

Tailwind

colors: {
  custom: {
    50: '#80a5d2',
    500: '#3b81bf',
    950: '#000000',
  },
}

SCSS

$custom: #3b81bf;
$custom-light: #80a5d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3b81bf",
  "rgb": {
    "r": 59,
    "g": 129,
    "b": 191
  },
  "hsl": {
    "h": 208.182,
    "s": 52.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.58705,
    "c": 0.11855,
    "h": 248.1
  },
  "luminance": 0.20392
}

Semantic roles & 50–950 ramp

primary

#3B81BF

secondary

#CAA98C

accent

#904CDC

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3B81BF

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

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