#40B7DF#40B7DF

#40B7DF is a light, moderate cyan. Relative luminance 0.403; OKLCH L 73.0% C 0.118 H 224.6°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#40B7DF
RGB	rgb(64, 183, 223)
HSL	hsl(195, 71%, 56%)
HSV	hsv(195, 71%, 87%)
CMYK	cmyk(71.3%, 17.9%, 0%, 12.5%)
CIE-LAB	lab(69.67, -20.12, -29.60)
CIE-LCH	lch(69.67, 35.79, 235.79°)
OKLab	oklab(73.02% -0.084 -0.0829)
OKLCH	oklch(73.02% 0.118 224.6)
XYZ	xyz(32.3617, 40.2809, 75.8672)
Luminance	0.4028 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B7DF #DF6840

analogous

#40DFB7 #40B7DF #4068DF

triadic

#40B7DF #DF40B7 #B7DF40

tetradic

#40B7DF #B740DF #DF6840 #68DF40

square

#40B7DF #B740DF #DF6840 #68DF40

split-complementary

#40B7DF #DF4068 #DFB740

monochromatic

#186F8D #2099C1 #40B7DF #74CBE8 #A9DFF1

Accessibility & contrast

On white

2.32

#40B7DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.06

#40B7DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B7DF

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B7DF	#FFFFFF	#000000	##000000
##40B7DF	1.00	2.32	9.06	9.06
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.06	21.00	1.00	1.00
##000000	9.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B3E1

Deuteranopia (green-blind)

#8BA3DF

Tritanopia (blue-blind)

#00C3C4

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #40b7df;
/* rgb */ color: rgb(64, 183, 223);
/* oklch */ color: oklch(73.0% 0.118 224.6);

Tailwind

colors: {
  custom: {
    50: '#89cce9',
    500: '#40b7df',
    950: '#000000',
  },
}

SCSS

$custom: #40b7df;
$custom-light: #89cce9;
$custom-dark: #000000;

JSON

{
  "hex": "#40b7df",
  "rgb": {
    "r": 64,
    "g": 183,
    "b": 223
  },
  "hsl": {
    "h": 195.094,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.73021,
    "c": 0.11803,
    "h": 224.6
  },
  "luminance": 0.40285
}

Semantic roles & 50–950 ramp

primary

#40B7DF

secondary

#DEAD9D

accent

#673AEE

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #40B7DF

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

Preview Lab → · Contrast checker → · Palette generator →