#4C90BB#4C90BB

#4C90BB is a light, moderate cyan. Relative luminance 0.251; OKLCH L 62.7% C 0.095 H 238.6°. Best body text is #000000 at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#4C90BB
RGB	rgb(76, 144, 187)
HSL	hsl(203, 45%, 52%)
HSV	hsv(203, 59%, 73%)
CMYK	cmyk(59.4%, 23%, 0%, 26.7%)
CIE-LAB	lab(57.14, -8.65, -28.90)
CIE-LCH	lch(57.14, 30.16, 253.34°)
OKLab	oklab(62.67% -0.0495 -0.0809)
OKLCH	oklch(62.67% 0.095 238.6)
XYZ	xyz(21.9200, 25.0688, 50.6877)
Luminance	0.2507 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C90BB #BB774C

analogous

#4CBBAE #4C90BB #4C59BB

triadic

#4C90BB #BB4C90 #90BB4C

tetradic

#4C90BB #AE4CBB #BB774C #59BB4C

square

#4C90BB #AE4CBB #BB774C #59BB4C

split-complementary

#4C90BB #BB4C59 #BBAE4C

monochromatic

#274D66 #386F92 #4C90BB #78ACCC #A5C7DD

Accessibility & contrast

On white

3.49

#4C90BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.01

#4C90BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4C90BB

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C90BB	#FFFFFF	#000000	##000000
##4C90BB	1.00	3.49	6.01	6.01
#FFFFFF	3.49	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)

#7C90BD

Deuteranopia (green-blind)

#6D84BA

Tritanopia (blue-blind)

#009B9E

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #4c90bb;
/* rgb */ color: rgb(76, 144, 187);
/* oklch */ color: oklch(62.7% 0.095 238.6);

Tailwind

colors: {
  custom: {
    50: '#87b0cf',
    500: '#4c90bb',
    950: '#000000',
  },
}

SCSS

$custom: #4c90bb;
$custom-light: #87b0cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4c90bb",
  "rgb": {
    "r": 76,
    "g": 144,
    "b": 187
  },
  "hsl": {
    "h": 203.243,
    "s": 44.939,
    "l": 51.569
  },
  "oklch": {
    "l": 0.62665,
    "c": 0.09485,
    "h": 238.6
  },
  "luminance": 0.25071
}

Semantic roles & 50–950 ramp

primary

#4C90BB

secondary

#CAAC99

accent

#8553D5

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4C90BB

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

Preview Lab → · Contrast checker → · Palette generator →