#4099BF#4099BF

#4099BF is a light, moderate cyan. Relative luminance 0.276; OKLCH L 64.5% C 0.101 H 229.5°. Best body text is #000000 at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#4099BF
RGB	rgb(64, 153, 191)
HSL	hsl(198, 50%, 50%)
HSV	hsv(198, 66%, 75%)
CMYK	cmyk(66.5%, 19.9%, 0%, 25.1%)
CIE-LAB	lab(59.55, -14.51, -27.46)
CIE-LCH	lch(59.55, 31.06, 242.14°)
OKLab	oklab(64.52% -0.0657 -0.0769)
OKLCH	oklch(64.52% 0.101 229.5)
XYZ	xyz(22.9058, 27.6316, 53.4064)
Luminance	0.2763 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4099BF #BF6640

analogous

#40BFA6 #4099BF #4059BF

triadic

#4099BF #BF4099 #99BF40

tetradic

#4099BF #A640BF #BF6640 #59BF40

square

#4099BF #A640BF #BF6640 #59BF40

split-complementary

#4099BF #BF4059 #BFA640

monochromatic

#215063 #317491 #4099BF #6EB1CE #9CCADE

Accessibility & contrast

On white

3.22

#4099BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.53

#4099BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4099BF

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4099BF	#FFFFFF	#000000	##000000
##4099BF	1.00	3.22	6.53	6.53
#FFFFFF	3.22	1.00	21.00	21.00
#000000	6.53	21.00	1.00	1.00
##000000	6.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8597C1

Deuteranopia (green-blind)

#748ABE

Tritanopia (blue-blind)

#00A4A6

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #4099bf;
/* rgb */ color: rgb(64, 153, 191);
/* oklch */ color: oklch(64.5% 0.101 229.5);

Tailwind

colors: {
  custom: {
    50: '#83b7d2',
    500: '#4099bf',
    950: '#000000',
  },
}

SCSS

$custom: #4099bf;
$custom-light: #83b7d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4099bf",
  "rgb": {
    "r": 64,
    "g": 153,
    "b": 191
  },
  "hsl": {
    "h": 197.953,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.6452,
    "c": 0.10113,
    "h": 229.5
  },
  "luminance": 0.27634
}

Semantic roles & 50–950 ramp

primary

#4099BF

secondary

#CAA291

accent

#784ED9

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1114

muted

#7D8082

Preview Lab

Preview with #4099BF

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

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