#4088CB#4088CB

#4088CB is a mid, vivid cyan. Relative luminance 0.230; OKLCH L 61.2% C 0.125 H 249.2°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#4088CB
RGB	rgb(64, 136, 203)
HSL	hsl(209, 57%, 52%)
HSV	hsv(209, 68%, 80%)
CMYK	cmyk(68.5%, 33%, 0%, 20.4%)
CIE-LAB	lab(55.08, -0.82, -41.22)
CIE-LCH	lch(55.08, 41.23, 268.87°)
OKLab	oklab(61.15% -0.0445 -0.1168)
OKLCH	oklch(61.15% 0.125 249.2)
XYZ	xyz(21.6940, 23.0078, 59.7860)
Luminance	0.2301 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4088CB #CB8340

analogous

#40CBC9 #4088CB #4042CB

triadic

#4088CB #CB4088 #88CB40

tetradic

#4088CB #C940CB #CB8340 #42CB40

square

#4088CB #C940CB #CB8340 #42CB40

split-complementary

#4088CB #CB4042 #CBC940

monochromatic

#1F4A72 #2C69A2 #4088CB #70A6D8 #A0C4E5

Accessibility & contrast

On white

3.75

#4088CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#4088CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4088CB

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4088CB	#FFFFFF	#000000	##000000
##4088CB	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A8BCE

Deuteranopia (green-blind)

#577ECA

Tritanopia (blue-blind)

#0098A0

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #4088cb;
/* rgb */ color: rgb(64, 136, 203);
/* oklch */ color: oklch(61.2% 0.125 249.2);

Tailwind

colors: {
  custom: {
    50: '#84aadb',
    500: '#4088cb',
    950: '#000000',
  },
}

SCSS

$custom: #4088cb;
$custom-light: #84aadb;
$custom-dark: #000000;

JSON

{
  "hex": "#4088cb",
  "rgb": {
    "r": 64,
    "g": 136,
    "b": 203
  },
  "hsl": {
    "h": 208.921,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.61152,
    "c": 0.12501,
    "h": 249.2
  },
  "luminance": 0.2301
}

Semantic roles & 50–950 ramp

primary

#4088CB

secondary

#D2B295

accent

#9147E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4088CB

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

Preview Lab → · Contrast checker → · Palette generator →