#4B90BB#4B90BB

#4B90BB is a light, moderate cyan. Relative luminance 0.250; OKLCH L 62.6% C 0.095 H 238.2°. Best body text is #000000 at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#4B90BB
RGB	rgb(75, 144, 187)
HSL	hsl(203, 45%, 51%)
HSV	hsv(203, 60%, 73%)
CMYK	cmyk(59.9%, 23%, 0%, 26.7%)
CIE-LAB	lab(57.10, -8.84, -28.96)
CIE-LCH	lch(57.10, 30.28, 253.02°)
OKLab	oklab(62.62% -0.0502 -0.0811)
OKLCH	oklch(62.62% 0.095 238.2)
XYZ	xyz(21.8412, 25.0282, 50.6840)
Luminance	0.2503 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B90BB #BB764B

analogous

#4BBBAE #4B90BB #4B58BB

triadic

#4B90BB #BB4B90 #90BB4B

tetradic

#4B90BB #AE4BBB #BB764B #58BB4B

square

#4B90BB #AE4BBB #BB764B #58BB4B

split-complementary

#4B90BB #BB4B58 #BBAE4B

monochromatic

#264D65 #376F92 #4B90BB #77ABCC #A4C7DD

Accessibility & contrast

On white

3.50

#4B90BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.01

#4B90BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4B90BB

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B90BB	#FFFFFF	#000000	##000000
##4B90BB	1.00	3.50	6.01	6.01
#FFFFFF	3.50	1.00	21.00	21.00
#000000	6.01	21.00	1.00	1.00
##000000	6.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8FBD

Deuteranopia (green-blind)

#6D84BA

Tritanopia (blue-blind)

#009B9E

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #4b90bb;
/* rgb */ color: rgb(75, 144, 187);
/* oklch */ color: oklch(62.6% 0.095 238.2);

Tailwind

colors: {
  custom: {
    50: '#87b0cf',
    500: '#4b90bb',
    950: '#000000',
  },
}

SCSS

$custom: #4b90bb;
$custom-light: #87b0cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4b90bb",
  "rgb": {
    "r": 75,
    "g": 144,
    "b": 187
  },
  "hsl": {
    "h": 203.036,
    "s": 45.161,
    "l": 51.373
  },
  "oklch": {
    "l": 0.62623,
    "c": 0.0954,
    "h": 238.2
  },
  "luminance": 0.2503
}

Semantic roles & 50–950 ramp

primary

#4B90BB

secondary

#CAAB98

accent

#8553D5

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4B90BB

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

Preview Lab → · Contrast checker → · Palette generator →