#4B90E3#4B90E3

#4B90E3 is a light, vivid cyan. Relative luminance 0.270; OKLCH L 64.7% C 0.143 H 254.4°. Best body text is #000000 at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#4B90E3
RGB	rgb(75, 144, 227)
HSL	hsl(213, 73%, 59%)
HSV	hsv(213, 67%, 89%)
CMYK	cmyk(67%, 36.6%, 0%, 11%)
CIE-LAB	lab(58.96, 4.50, -48.52)
CIE-LCH	lch(58.96, 48.73, 275.29°)
OKLab	oklab(64.7% -0.0385 -0.1379)
OKLCH	oklch(64.7% 0.143 254.4)
XYZ	xyz(26.7350, 26.9857, 76.4579)
Luminance	0.2699 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B90E3 #E39E4B

analogous

#4BDCE3 #4B90E3 #524BE3

triadic

#4B90E3 #E34B90 #90E34B

tetradic

#4B90E3 #E34BDC #E39E4B #4BE352

square

#4B90E3 #E34BDC #E39E4B #4BE352

split-complementary

#4B90E3 #E3524B #DCE34B

monochromatic

#18549B #2070D0 #4B90E3 #80B1EB #B5D1F3

Accessibility & contrast

On white

3.28

#4B90E3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.40

#4B90E3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B90E3

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B90E3	#FFFFFF	#000000	##000000
##4B90E3	1.00	3.28	6.40	6.40
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.40	21.00	1.00	1.00
##000000	6.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B96E6

Deuteranopia (green-blind)

#5587E1

Tritanopia (blue-blind)

#00A3AF

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #4b90e3;
/* rgb */ color: rgb(75, 144, 227);
/* oklch */ color: oklch(64.7% 0.143 254.4);

Tailwind

colors: {
  custom: {
    50: '#8db0ec',
    500: '#4b90e3',
    950: '#000000',
  },
}

SCSS

$custom: #4b90e3;
$custom-light: #8db0ec;
$custom-dark: #000000;

JSON

{
  "hex": "#4b90e3",
  "rgb": {
    "r": 75,
    "g": 144,
    "b": 227
  },
  "hsl": {
    "h": 212.763,
    "s": 73.077,
    "l": 59.216
  },
  "oklch": {
    "l": 0.64695,
    "c": 0.14318,
    "h": 254.4
  },
  "luminance": 0.26988
}

Semantic roles & 50–950 ramp

primary

#4B90E3

secondary

#E3C8A7

accent

#9C38F0

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #4B90E3

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

Preview Lab → · Contrast checker → · Palette generator →