#4591EF#4591EF

#4591EF is a light, vivid cyan. Relative luminance 0.277; OKLCH L 65.4% C 0.160 H 255.2°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#4591EF
RGB	rgb(69, 145, 239)
HSL	hsl(213, 84%, 60%)
HSV	hsv(213, 71%, 94%)
CMYK	cmyk(71.1%, 39.3%, 0%, 6.3%)
CIE-LAB	lab(59.66, 7.19, -54.08)
CIE-LCH	lch(59.66, 54.56, 277.57°)
OKLab	oklab(65.38% -0.0407 -0.1543)
OKLCH	oklch(65.38% 0.16 255.2)
XYZ	xyz(28.1539, 27.7449, 85.5161)
Luminance	0.2775 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4591EF #EFA345

analogous

#45E6EF #4591EF #4E45EF

triadic

#4591EF #EF4591 #91EF45

tetradic

#4591EF #EF45E6 #EFA345 #45EF4E

square

#4591EF #EF45E6 #EFA345 #45EF4E

split-complementary

#4591EF #EF4E45 #E6EF45

monochromatic

#0F55AB #1470E3 #4591EF #7DB2F4 #B6D4F9

Accessibility & contrast

On white

3.21

#4591EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#4591EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4591EF

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4591EF	#FFFFFF	#000000	##000000
##4591EF	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6598F3

Deuteranopia (green-blind)

#4A88ED

Tritanopia (blue-blind)

#00A7B4

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #4591ef;
/* rgb */ color: rgb(69, 145, 239);
/* oklch */ color: oklch(65.4% 0.160 255.2);

Tailwind

colors: {
  custom: {
    50: '#8cb0f5',
    500: '#4591ef',
    950: '#000000',
  },
}

SCSS

$custom: #4591ef;
$custom-light: #8cb0f5;
$custom-dark: #000000;

JSON

{
  "hex": "#4591ef",
  "rgb": {
    "r": 69,
    "g": 145,
    "b": 239
  },
  "hsl": {
    "h": 213.176,
    "s": 84.158,
    "l": 60.392
  },
  "oklch": {
    "l": 0.65383,
    "c": 0.15955,
    "h": 255.2
  },
  "luminance": 0.27748
}

Semantic roles & 50–950 ramp

primary

#4591EF

secondary

#E8CBA7

accent

#7E05E1

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #4591EF

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

Preview Lab → · Contrast checker → · Palette generator →