#40B8DD#40B8DD

#40B8DD is a light, moderate cyan. Relative luminance 0.406; OKLCH L 73.2% C 0.116 H 222.6°. Best body text is #000000 at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#40B8DD
RGB	rgb(64, 184, 221)
HSL	hsl(194, 70%, 56%)
HSV	hsv(194, 71%, 87%)
CMYK	cmyk(71%, 16.7%, 0%, 13.3%)
CIE-LAB	lab(69.89, -21.28, -28.18)
CIE-LCH	lch(69.89, 35.31, 232.94°)
OKLab	oklab(73.17% -0.0858 -0.0788)
OKLCH	oklch(73.17% 0.116 222.6)
XYZ	xyz(32.3006, 40.5877, 74.5245)
Luminance	0.4059 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B8DD #DD6540

analogous

#40DDB3 #40B8DD #4069DD

triadic

#40B8DD #DD40B8 #B8DD40

tetradic

#40B8DD #B340DD #DD6540 #69DD40

square

#40B8DD #B340DD #DD6540 #69DD40

split-complementary

#40B8DD #DD4069 #DDB340

monochromatic

#196F8A #2299BE #40B8DD #74CBE6 #A8DFEF

Accessibility & contrast

On white

2.30

#40B8DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.12

#40B8DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B8DD

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B8DD	#FFFFFF	#000000	##000000
##40B8DD	1.00	2.30	9.12	9.12
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.12	21.00	1.00	1.00
##000000	9.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3B4DF

Deuteranopia (green-blind)

#8DA4DD

Tritanopia (blue-blind)

#00C3C4

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #40b8dd;
/* rgb */ color: rgb(64, 184, 221);
/* oklch */ color: oklch(73.2% 0.116 222.6);

Tailwind

colors: {
  custom: {
    50: '#89cde7',
    500: '#40b8dd',
    950: '#000000',
  },
}

SCSS

$custom: #40b8dd;
$custom-light: #89cde7;
$custom-dark: #000000;

JSON

{
  "hex": "#40b8dd",
  "rgb": {
    "r": 64,
    "g": 184,
    "b": 221
  },
  "hsl": {
    "h": 194.14,
    "s": 69.778,
    "l": 55.882
  },
  "oklch": {
    "l": 0.73169,
    "c": 0.11645,
    "h": 222.6
  },
  "luminance": 0.40591
}

Semantic roles & 50–950 ramp

primary

#40B8DD

secondary

#DDAB9C

accent

#653BED

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #40B8DD

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

Preview Lab → · Contrast checker → · Palette generator →