#3B77CB#3B77CB

#3B77CB is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.1% C 0.144 H 257.3°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3B77CB
RGB	rgb(59, 119, 203)
HSL	hsl(215, 58%, 51%)
HSV	hsv(215, 71%, 80%)
CMYK	cmyk(70.9%, 41.4%, 0%, 20.4%)
CIE-LAB	lab(50.02, 8.70, -49.26)
CIE-LCH	lch(50.02, 50.02, 280.01°)
OKLab	oklab(57.15% -0.0316 -0.1407)
OKLCH	oklch(57.15% 0.144 257.3)
XYZ	xyz(19.1760, 18.4332, 59.0357)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B77CB #CB8F3B

analogous

#3BBFCB #3B77CB #473BCB

triadic

#3B77CB #CB3B77 #77CB3B

tetradic

#3B77CB #CB3BBF #CB8F3B #3BCB47

square

#3B77CB #CB3BBF #CB8F3B #3BCB47

split-complementary

#3B77CB #CB473B #BFCB3B

monochromatic

#1D3F6E #2A5B9F #3B77CB #6B99D8 #9CBAE5

Accessibility & contrast

On white

4.48

#3B77CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#3B77CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B77CB

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B77CB	#FFFFFF	#000000	##000000
##3B77CB	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F7ECE

Deuteranopia (green-blind)

#3771C9

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3b77cb;
/* rgb */ color: rgb(59, 119, 203);
/* oklch */ color: oklch(57.1% 0.144 257.3);

Tailwind

colors: {
  custom: {
    50: '#829ddb',
    500: '#3b77cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b77cb;
$custom-light: #829ddb;
$custom-dark: #000000;

JSON

{
  "hex": "#3b77cb",
  "rgb": {
    "r": 59,
    "g": 119,
    "b": 203
  },
  "hsl": {
    "h": 215,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57148,
    "c": 0.14418,
    "h": 257.3
  },
  "luminance": 0.18435
}

Semantic roles & 50–950 ramp

primary

#3B77CB

secondary

#D1B691

accent

#A147E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3B77CB

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

Preview Lab → · Contrast checker → · Palette generator →