#4B81CF#4B81CF

#4B81CF is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.3% C 0.133 H 257.7°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#4B81CF
RGB	rgb(75, 129, 207)
HSL	hsl(215, 58%, 55%)
HSV	hsv(215, 64%, 81%)
CMYK	cmyk(63.8%, 37.7%, 0%, 18.8%)
CIE-LAB	lab(53.71, 6.58, -45.63)
CIE-LCH	lch(53.71, 46.10, 278.21°)
OKLab	oklab(60.26% -0.0283 -0.1296)
OKLCH	oklch(60.26% 0.133 257.7)
XYZ	xyz(22.0104, 21.6993, 62.0478)
Luminance	0.2170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B81CF #CF994B

analogous

#4BC3CF #4B81CF #574BCF

triadic

#4B81CF #CF4B81 #81CF4B

tetradic

#4B81CF #CF4BC3 #CF994B #4BCF57

square

#4B81CF #CF4BC3 #CF994B #4BCF57

split-complementary

#4B81CF #CF574B #C3CF4B

monochromatic

#22477E #2E63AE #4B81CF #7BA3DC #ACC5E9

Accessibility & contrast

On white

3.93

#4B81CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#4B81CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B81CF

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B81CF	#FFFFFF	#000000	##000000
##4B81CF	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F87D2

Deuteranopia (green-blind)

#4C7BCD

Tritanopia (blue-blind)

#00939E

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #4b81cf;
/* rgb */ color: rgb(75, 129, 207);
/* oklch */ color: oklch(60.3% 0.133 257.7);

Tailwind

colors: {
  custom: {
    50: '#89a5de',
    500: '#4b81cf',
    950: '#000000',
  },
}

SCSS

$custom: #4b81cf;
$custom-light: #89a5de;
$custom-dark: #000000;

JSON

{
  "hex": "#4b81cf",
  "rgb": {
    "r": 75,
    "g": 129,
    "b": 207
  },
  "hsl": {
    "h": 215.455,
    "s": 57.895,
    "l": 55.294
  },
  "oklch": {
    "l": 0.60262,
    "c": 0.1327,
    "h": 257.7
  },
  "luminance": 0.21701
}

Semantic roles & 50–950 ramp

primary

#4B81CF

secondary

#D6C09F

accent

#A247E1

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #4B81CF

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

Preview Lab → · Contrast checker → · Palette generator →