#247DA3#247DA3

#247DA3 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.6% C 0.100 H 231.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#247DA3
RGB	rgb(36, 125, 163)
HSL	hsl(198, 64%, 39%)
HSV	hsv(198, 78%, 64%)
CMYK	cmyk(77.9%, 23.3%, 0%, 36.1%)
CIE-LAB	lab(49.11, -12.45, -27.66)
CIE-LCH	lch(49.11, 30.33, 245.76°)
OKLab	oklab(55.59% -0.0622 -0.0778)
OKLCH	oklch(55.59% 0.1 231.4)
XYZ	xyz(14.6693, 17.6849, 37.2836)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#247DA3 #A34A24

analogous

#24A38A #247DA3 #243EA3

triadic

#247DA3 #A3247D #7DA324

tetradic

#247DA3 #8A24A3 #A34A24 #3EA324

square

#247DA3 #8A24A3 #A34A24 #3EA324

split-complementary

#247DA3 #A3243E #A38A24

monochromatic

#0E303F #195771 #247DA3 #32A2D2 #65B9DD

Accessibility & contrast

On white

4.63

#247DA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#247DA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #247DA3

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##247DA3	#FFFFFF	#000000	##FFFFFF
##247DA3	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7BA5

Deuteranopia (green-blind)

#596FA2

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #247da3;
/* rgb */ color: rgb(36, 125, 163);
/* oklch */ color: oklch(55.6% 0.100 231.4);

Tailwind

colors: {
  custom: {
    50: '#73a2be',
    500: '#247da3',
    950: '#000000',
  },
}

SCSS

$custom: #247da3;
$custom-light: #73a2be;
$custom-dark: #000000;

JSON

{
  "hex": "#247da3",
  "rgb": {
    "r": 36,
    "g": 125,
    "b": 163
  },
  "hsl": {
    "h": 197.953,
    "s": 63.819,
    "l": 39.02
  },
  "oklch": {
    "l": 0.55586,
    "c": 0.09967,
    "h": 231.4
  },
  "luminance": 0.17687
}

Semantic roles & 50–950 ramp

primary

#247DA3

secondary

#C27E60

accent

#7341E7

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #247DA3

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

Preview Lab → · Contrast checker → · Palette generator →