#4091E4#4091E4

#4091E4 is a light, vivid cyan. Relative luminance 0.269; OKLCH L 64.6% C 0.147 H 251.6°. Best body text is #000000 at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#4091E4
RGB	rgb(64, 145, 228)
HSL	hsl(210, 75%, 57%)
HSV	hsv(210, 72%, 89%)
CMYK	cmyk(71.9%, 36.4%, 0%, 10.6%)
CIE-LAB	lab(58.92, 2.64, -49.17)
CIE-LCH	lch(58.92, 49.24, 273.07°)
OKLab	oklab(64.57% -0.0464 -0.1399)
OKLCH	oklch(64.57% 0.147 251.6)
XYZ	xyz(26.2381, 26.9393, 77.2007)
Luminance	0.2694 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4091E4 #E49340

analogous

#40E3E4 #4091E4 #4140E4

triadic

#4091E4 #E44091 #91E440

tetradic

#4091E4 #E440E3 #E49340 #40E441

square

#4091E4 #E440E3 #E49340 #40E441

split-complementary

#4091E4 #E44140 #E3E440

monochromatic

#155495 #1D72CA #4091E4 #76B0EC #ABCFF3

Accessibility & contrast

On white

3.29

#4091E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.39

#4091E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4091E4

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4091E4	#FFFFFF	#000000	##000000
##4091E4	1.00	3.29	6.39	6.39
#FFFFFF	3.29	1.00	21.00	21.00
#000000	6.39	21.00	1.00	1.00
##000000	6.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B96E7

Deuteranopia (green-blind)

#5387E2

Tritanopia (blue-blind)

#00A5B0

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #4091e4;
/* rgb */ color: rgb(64, 145, 228);
/* oklch */ color: oklch(64.6% 0.147 251.6);

Tailwind

colors: {
  custom: {
    50: '#88b0ed',
    500: '#4091e4',
    950: '#000000',
  },
}

SCSS

$custom: #4091e4;
$custom-light: #88b0ed;
$custom-dark: #000000;

JSON

{
  "hex": "#4091e4",
  "rgb": {
    "r": 64,
    "g": 145,
    "b": 228
  },
  "hsl": {
    "h": 210.366,
    "s": 75.229,
    "l": 57.255
  },
  "oklch": {
    "l": 0.64573,
    "c": 0.14744,
    "h": 251.6
  },
  "luminance": 0.26942
}

Semantic roles & 50–950 ramp

primary

#4091E4

secondary

#E1C09F

accent

#9536F2

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #4091E4

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

Preview Lab → · Contrast checker → · Palette generator →