#4B91FC#4B91FC

#4B91FC is a light, vivid blue. Relative luminance 0.288; OKLCH L 66.4% C 0.174 H 258.7°. Best body text is #000000 at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#4B91FC
RGB	rgb(75, 145, 252)
HSL	hsl(216, 97%, 64%)
HSV	hsv(216, 70%, 99%)
CMYK	cmyk(70.2%, 42.5%, 0%, 1.2%)
CIE-LAB	lab(60.58, 12.57, -59.76)
CIE-LCH	lch(60.58, 61.06, 281.88°)
OKLab	oklab(66.39% -0.034 -0.1708)
OKLCH	oklch(66.39% 0.174 258.7)
XYZ	xyz(30.5914, 28.7717, 96.0178)
Luminance	0.2878 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B91FC #FCB64B

analogous

#4BEAFC #4B91FC #5E4BFC

triadic

#4B91FC #FC4B91 #91FC4B

tetradic

#4B91FC #FC4BEA #FCB64B #4BFC5E

square

#4B91FC #FC4BEA #FCB64B #4BFC5E

split-complementary

#4B91FC #FC5E4B #EAFC4B

monochromatic

#0352C9 #0F6CFB #4B91FC #87B6FD #C3DBFE

Accessibility & contrast

On white

3.11

#4B91FC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.76

#4B91FC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B91FC

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B91FC	#FFFFFF	#000000	##000000
##4B91FC	1.00	3.11	6.76	6.76
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.76	21.00	1.00	1.00
##000000	6.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D9BFF

Deuteranopia (green-blind)

#3E8BFA

Tritanopia (blue-blind)

#00AABA

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #4b91fc;
/* rgb */ color: rgb(75, 145, 252);
/* oklch */ color: oklch(66.4% 0.174 258.7);

Tailwind

colors: {
  custom: {
    50: '#91b0fe',
    500: '#4b91fc',
    950: '#000000',
  },
}

SCSS

$custom: #4b91fc;
$custom-light: #91b0fe;
$custom-dark: #000000;

JSON

{
  "hex": "#4b91fc",
  "rgb": {
    "r": 75,
    "g": 145,
    "b": 252
  },
  "hsl": {
    "h": 216.271,
    "s": 96.721,
    "l": 64.118
  },
  "oklch": {
    "l": 0.66388,
    "c": 0.1742,
    "h": 258.7
  },
  "luminance": 0.28775
}

Semantic roles & 50–950 ramp

primary

#4B91FC

secondary

#F0D8B3

accent

#8B00E6

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0E1018

muted

#7E7F86

Preview Lab

Preview with #4B91FC

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

Preview Lab → · Contrast checker → · Palette generator →