#4E90CB#4E90CB

#4E90CB is a light, moderate cyan. Relative luminance 0.259; OKLCH L 63.5% C 0.112 H 247.5°. Best body text is #000000 at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#4E90CB
RGB	rgb(78, 144, 203)
HSL	hsl(208, 55%, 55%)
HSV	hsv(208, 62%, 80%)
CMYK	cmyk(61.6%, 29.1%, 0%, 20.4%)
CIE-LAB	lab(57.92, -3.07, -36.73)
CIE-LCH	lch(57.92, 36.85, 265.23°)
OKLab	oklab(63.53% -0.0428 -0.1035)
OKLCH	oklch(63.53% 0.112 247.5)
XYZ	xyz(23.8907, 25.8757, 60.2238)
Luminance	0.2588 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4E90CB #CB894E

analogous

#4ECBC7 #4E90CB #4E52CB

triadic

#4E90CB #CB4E90 #90CB4E

tetradic

#4E90CB #C74ECB #CB894E #52CB4E

square

#4E90CB #C74ECB #CB894E #52CB4E

split-complementary

#4E90CB #CB4E52 #CBC74E

monochromatic

#24527B #3271AA #4E90CB #7DAED9 #ADCBE7

Accessibility & contrast

On white

3.40

#4E90CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.18

#4E90CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4E90CB

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4E90CB	#FFFFFF	#000000	##000000
##4E90CB	1.00	3.40	6.18	6.18
#FFFFFF	3.40	1.00	21.00	21.00
#000000	6.18	21.00	1.00	1.00
##000000	6.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7692CE

Deuteranopia (green-blind)

#6686CA

Tritanopia (blue-blind)

#009EA5

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #4e90cb;
/* rgb */ color: rgb(78, 144, 203);
/* oklch */ color: oklch(63.5% 0.112 247.5);

Tailwind

colors: {
  custom: {
    50: '#8ab0db',
    500: '#4e90cb',
    950: '#000000',
  },
}

SCSS

$custom: #4e90cb;
$custom-light: #8ab0db;
$custom-dark: #000000;

JSON

{
  "hex": "#4e90cb",
  "rgb": {
    "r": 78,
    "g": 144,
    "b": 203
  },
  "hsl": {
    "h": 208.32,
    "s": 54.585,
    "l": 55.098
  },
  "oklch": {
    "l": 0.6353,
    "c": 0.11199,
    "h": 247.5
  },
  "luminance": 0.25878
}

Semantic roles & 50–950 ramp

primary

#4E90CB

secondary

#D5B9A0

accent

#904ADE

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D1015

muted

#7E7F83

Preview Lab

Preview with #4E90CB

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

Preview Lab → · Contrast checker → · Palette generator →