#5B77BB#5B77BB

#5B77BB is a mid, moderate blue. Relative luminance 0.190; OKLCH L 57.8% C 0.110 H 266.1°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#5B77BB
RGB	rgb(91, 119, 187)
HSL	hsl(223, 41%, 55%)
HSV	hsv(223, 51%, 73%)
CMYK	cmyk(51.3%, 36.4%, 0%, 26.7%)
CIE-LAB	lab(50.69, 9.32, -38.93)
CIE-LCH	lch(50.69, 40.03, 283.47°)
OKLab	oklab(57.81% -0.0075 -0.1099)
OKLCH	oklch(57.81% 0.11 266.1)
XYZ	xyz(19.8779, 19.0043, 49.6248)
Luminance	0.1901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B77BB #BB9F5B

analogous

#5BA7BB #5B77BB #6F5BBB

triadic

#5B77BB #BB5B77 #77BB5B

tetradic

#5B77BB #BB5BA7 #BB9F5B #5BBB6F

square

#5B77BB #BB5BA7 #BB9F5B #5BBB6F

split-complementary

#5B77BB #BB6F5B #A7BB5B

monochromatic

#2E406E #405A99 #5B77BB #869BCD #B2BFDF

Accessibility & contrast

On white

4.37

#5B77BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#5B77BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B77BB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B77BB	#FFFFFF	#000000	##000000
##5B77BB	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7DBE

Deuteranopia (green-blind)

#5275BA

Tritanopia (blue-blind)

#2F8690

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #5b77bb;
/* rgb */ color: rgb(91, 119, 187);
/* oklch */ color: oklch(57.8% 0.110 266.1);

Tailwind

colors: {
  custom: {
    50: '#8f9dd0',
    500: '#5b77bb',
    950: '#000000',
  },
}

SCSS

$custom: #5b77bb;
$custom-light: #8f9dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#5b77bb",
  "rgb": {
    "r": 91,
    "g": 119,
    "b": 187
  },
  "hsl": {
    "h": 222.5,
    "s": 41.379,
    "l": 54.51
  },
  "oklch": {
    "l": 0.57807,
    "c": 0.11014,
    "h": 266.1
  },
  "luminance": 0.19006
}

Semantic roles & 50–950 ramp

primary

#5B77BB

secondary

#CDC1A5

accent

#AD57D1

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #5B77BB

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

Preview Lab → · Contrast checker → · Palette generator →