#4B90CB#4B90CB

#4B90CB is a light, moderate cyan. Relative luminance 0.258; OKLCH L 63.4% C 0.113 H 246.6°. Best body text is #000000 at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#4B90CB
RGB	rgb(75, 144, 203)
HSL	hsl(208, 55%, 55%)
HSV	hsv(208, 63%, 80%)
CMYK	cmyk(63.1%, 29.1%, 0%, 20.4%)
CIE-LAB	lab(57.80, -3.62, -36.92)
CIE-LCH	lch(57.80, 37.10, 264.40°)
OKLab	oklab(63.4% -0.045 -0.1041)
OKLCH	oklch(63.4% 0.113 246.6)
XYZ	xyz(23.6504, 25.7519, 60.2126)
Luminance	0.2575 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B90CB #CB864B

analogous

#4BCBC6 #4B90CB #4B50CB

triadic

#4B90CB #CB4B90 #90CB4B

tetradic

#4B90CB #C64BCB #CB864B #50CB4B

square

#4B90CB #C64BCB #CB864B #50CB4B

split-complementary

#4B90CB #CB4B50 #CBC64B

monochromatic

#235179 #3171A8 #4B90CB #7AADD9 #AACBE6

Accessibility & contrast

On white

3.41

#4B90CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.15

#4B90CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B90CB

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B90CB	#FFFFFF	#000000	##000000
##4B90CB	1.00	3.41	6.15	6.15
#FFFFFF	3.41	1.00	21.00	21.00
#000000	6.15	21.00	1.00	1.00
##000000	6.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7692CE

Deuteranopia (green-blind)

#6585CA

Tritanopia (blue-blind)

#009EA5

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #4b90cb;
/* rgb */ color: rgb(75, 144, 203);
/* oklch */ color: oklch(63.4% 0.113 246.6);

Tailwind

colors: {
  custom: {
    50: '#89b0db',
    500: '#4b90cb',
    950: '#000000',
  },
}

SCSS

$custom: #4b90cb;
$custom-light: #89b0db;
$custom-dark: #000000;

JSON

{
  "hex": "#4b90cb",
  "rgb": {
    "r": 75,
    "g": 144,
    "b": 203
  },
  "hsl": {
    "h": 207.656,
    "s": 55.172,
    "l": 54.51
  },
  "oklch": {
    "l": 0.63404,
    "c": 0.11341,
    "h": 246.6
  },
  "luminance": 0.25754
}

Semantic roles & 50–950 ramp

primary

#4B90CB

secondary

#D4B79E

accent

#8E49DF

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0D1015

muted

#7D7F83

Preview Lab

Preview with #4B90CB

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

Preview Lab → · Contrast checker → · Palette generator →