#5B91CB#5B91CB

#5B91CB is a light, moderate cyan. Relative luminance 0.268; OKLCH L 64.4% C 0.105 H 251.3°. Best body text is #000000 at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#5B91CB
RGB	rgb(91, 145, 203)
HSL	hsl(211, 52%, 58%)
HSV	hsv(211, 55%, 80%)
CMYK	cmyk(55.2%, 28.6%, 0%, 20.4%)
CIE-LAB	lab(58.77, -1.03, -35.35)
CIE-LCH	lch(58.77, 35.36, 268.34°)
OKLab	oklab(64.36% -0.0335 -0.0993)
OKLCH	oklch(64.36% 0.105 251.3)
XYZ	xyz(25.2155, 26.7847, 60.3295)
Luminance	0.2679 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B91CB #CB955B

analogous

#5BC9CB #5B91CB #5D5BCB

triadic

#5B91CB #CB5B91 #91CB5B

tetradic

#5B91CB #CB5BC9 #CB955B #5BCB5D

square

#5B91CB #CB5BC9 #CB955B #5BCB5D

split-complementary

#5B91CB #CB5D5B #C9CB5B

monochromatic

#295482 #3872B1 #5B91CB #89B0DA #B8CFE8

Accessibility & contrast

On white

3.30

#5B91CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.36

#5B91CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B91CB

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B91CB	#FFFFFF	#000000	##000000
##5B91CB	1.00	3.30	6.36	6.36
#FFFFFF	3.30	1.00	21.00	21.00
#000000	6.36	21.00	1.00	1.00
##000000	6.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7993CE

Deuteranopia (green-blind)

#6B88CA

Tritanopia (blue-blind)

#099EA5

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #5b91cb;
/* rgb */ color: rgb(91, 145, 203);
/* oklch */ color: oklch(64.4% 0.105 251.3);

Tailwind

colors: {
  custom: {
    50: '#91b1db',
    500: '#5b91cb',
    950: '#000000',
  },
}

SCSS

$custom: #5b91cb;
$custom-light: #91b1db;
$custom-dark: #000000;

JSON

{
  "hex": "#5b91cb",
  "rgb": {
    "r": 91,
    "g": 145,
    "b": 203
  },
  "hsl": {
    "h": 211.071,
    "s": 51.852,
    "l": 57.647
  },
  "oklch": {
    "l": 0.64359,
    "c": 0.10483,
    "h": 251.3
  },
  "luminance": 0.26787
}

Semantic roles & 50–950 ramp

primary

#5B91CB

secondary

#D7C2AA

accent

#964CDB

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0D1015

muted

#7E7F83

Preview Lab

Preview with #5B91CB

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

Preview Lab → · Contrast checker → · Palette generator →