#4090CB#4090CB

#4090CB is a light, moderate cyan. Relative luminance 0.253; OKLCH L 63.0% C 0.118 H 243.7°. Best body text is #000000 at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#4090CB
RGB	rgb(64, 144, 203)
HSL	hsl(205, 57%, 52%)
HSV	hsv(205, 68%, 80%)
CMYK	cmyk(68.5%, 29.1%, 0%, 20.4%)
CIE-LAB	lab(57.41, -5.47, -37.56)
CIE-LCH	lch(57.41, 37.95, 261.72°)
OKLab	oklab(62.99% -0.0524 -0.1061)
OKLCH	oklch(62.99% 0.118 243.7)
XYZ	xyz(22.8630, 25.3459, 60.1757)
Luminance	0.2535 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4090CB #CB7B40

analogous

#40CBC1 #4090CB #404ACB

triadic

#4090CB #CB4090 #90CB40

tetradic

#4090CB #C140CB #CB7B40 #4ACB40

square

#4090CB #C140CB #CB7B40 #4ACB40

split-complementary

#4090CB #CB404A #CBC140

monochromatic

#1F4F72 #2C70A2 #4090CB #70ACD8 #A0C8E5

Accessibility & contrast

On white

3.46

#4090CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.07

#4090CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4090CB

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4090CB	#FFFFFF	#000000	##000000
##4090CB	1.00	3.46	6.07	6.07
#FFFFFF	3.46	1.00	21.00	21.00
#000000	6.07	21.00	1.00	1.00
##000000	6.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7591CE

Deuteranopia (green-blind)

#6284CA

Tritanopia (blue-blind)

#009EA5

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #4090cb;
/* rgb */ color: rgb(64, 144, 203);
/* oklch */ color: oklch(63.0% 0.118 243.7);

Tailwind

colors: {
  custom: {
    50: '#84b0db',
    500: '#4090cb',
    950: '#000000',
  },
}

SCSS

$custom: #4090cb;
$custom-light: #84b0db;
$custom-dark: #000000;

JSON

{
  "hex": "#4090cb",
  "rgb": {
    "r": 64,
    "g": 144,
    "b": 203
  },
  "hsl": {
    "h": 205.468,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.62988,
    "c": 0.11833,
    "h": 243.7
  },
  "luminance": 0.25348
}

Semantic roles & 50–950 ramp

primary

#4090CB

secondary

#D2AF95

accent

#8847E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4090CB

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

Preview Lab → · Contrast checker → · Palette generator →