#4F91BB#4F91BB

#4F91BB is a light, moderate cyan. Relative luminance 0.255; OKLCH L 63.0% C 0.093 H 238.5°. Best body text is #000000 at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#4F91BB
RGB	rgb(79, 145, 187)
HSL	hsl(203, 44%, 52%)
HSV	hsv(203, 58%, 73%)
CMYK	cmyk(57.8%, 22.5%, 0%, 26.7%)
CIE-LAB	lab(57.56, -8.60, -28.24)
CIE-LCH	lch(57.56, 29.52, 253.06°)
OKLab	oklab(63.03% -0.0484 -0.079)
OKLCH	oklch(63.03% 0.093 238.5)
XYZ	xyz(22.3161, 25.4989, 50.7498)
Luminance	0.2550 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F91BB #BB794F

analogous

#4FBBAF #4F91BB #4F5BBB

triadic

#4F91BB #BB4F91 #91BB4F

tetradic

#4F91BB #AF4FBB #BB794F #5BBB4F

square

#4F91BB #AF4FBB #BB794F #5BBB4F

split-complementary

#4F91BB #BB4F5B #BBAF4F

monochromatic

#284F68 #397094 #4F91BB #7BADCC #A7C8DD

Accessibility & contrast

On white

3.44

#4F91BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.10

#4F91BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4F91BB

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F91BB	#FFFFFF	#000000	##000000
##4F91BB	1.00	3.44	6.10	6.10
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.10	21.00	1.00	1.00
##000000	6.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E90BD

Deuteranopia (green-blind)

#6F85BA

Tritanopia (blue-blind)

#009C9F

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #4f91bb;
/* rgb */ color: rgb(79, 145, 187);
/* oklch */ color: oklch(63.0% 0.093 238.5);

Tailwind

colors: {
  custom: {
    50: '#89b1cf',
    500: '#4f91bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f91bb;
$custom-light: #89b1cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4f91bb",
  "rgb": {
    "r": 79,
    "g": 145,
    "b": 187
  },
  "hsl": {
    "h": 203.333,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.63028,
    "c": 0.09263,
    "h": 238.5
  },
  "luminance": 0.25501
}

Semantic roles & 50–950 ramp

primary

#4F91BB

secondary

#CAAE9B

accent

#8654D4

background

#F8FAFC

surface

#F0F5F9

border

#CBCFD2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4F91BB

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

Preview Lab → · Contrast checker → · Palette generator →