#4581D9#4581D9

#4581D9 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 60.6% C 0.148 H 258.0°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#4581D9
RGB	rgb(69, 129, 217)
HSL	hsl(216, 66%, 56%)
HSV	hsv(216, 68%, 85%)
CMYK	cmyk(68.2%, 40.6%, 0%, 14.9%)
CIE-LAB	lab(54.00, 9.07, -50.83)
CIE-LCH	lch(54.00, 51.63, 280.11°)
OKLab	oklab(60.6% -0.0308 -0.145)
OKLCH	oklch(60.6% 0.148 258)
XYZ	xyz(22.8244, 21.9731, 68.6706)
Luminance	0.2198 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4581D9 #D99D45

analogous

#45CBD9 #4581D9 #5345D9

triadic

#4581D9 #D94581 #81D945

tetradic

#4581D9 #D945CB #D99D45 #45D953

square

#4581D9 #D945CB #D99D45 #45D953

split-complementary

#4581D9 #D95345 #CBD945

monochromatic

#1C4888 #2662BB #4581D9 #78A3E3 #ABC6EE

Accessibility & contrast

On white

3.89

#4581D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#4581D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4581D9

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4581D9	#FFFFFF	#000000	##000000
##4581D9	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5889DC

Deuteranopia (green-blind)

#417BD7

Tritanopia (blue-blind)

#0095A2

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4581d9;
/* rgb */ color: rgb(69, 129, 217);
/* oklch */ color: oklch(60.6% 0.148 258.0);

Tailwind

colors: {
  custom: {
    50: '#88a5e5',
    500: '#4581d9',
    950: '#000000',
  },
}

SCSS

$custom: #4581d9;
$custom-light: #88a5e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4581d9",
  "rgb": {
    "r": 69,
    "g": 129,
    "b": 217
  },
  "hsl": {
    "h": 215.676,
    "s": 66.071,
    "l": 56.078
  },
  "oklch": {
    "l": 0.60596,
    "c": 0.14819,
    "h": 258
  },
  "luminance": 0.21975
}

Semantic roles & 50–950 ramp

primary

#4581D9

secondary

#DBC39E

accent

#A43FE9

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4581D9

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

Preview Lab → · Contrast checker → · Palette generator →