#247BB2#247BB2

#247BB2 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.9% C 0.117 H 241.7°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#247BB2
RGB	rgb(36, 123, 178)
HSL	hsl(203, 66%, 42%)
HSV	hsv(203, 80%, 70%)
CMYK	cmyk(79.8%, 30.9%, 0%, 30.2%)
CIE-LAB	lab(49.20, -5.84, -36.24)
CIE-LCH	lch(49.20, 36.71, 260.84°)
OKLab	oklab(55.88% -0.0552 -0.1027)
OKLCH	oklch(55.88% 0.117 241.7)
XYZ	xyz(15.8432, 17.7534, 44.7026)
Luminance	0.1776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#247BB2 #B25B24

analogous

#24B2A2 #247BB2 #2434B2

triadic

#247BB2 #B2247B #7BB224

tetradic

#247BB2 #A224B2 #B25B24 #34B224

square

#247BB2 #A224B2 #B25B24 #34B224

split-complementary

#247BB2 #B22434 #B2A224

monochromatic

#0F354C #1A587F #247BB2 #3C9BD8 #6FB5E2

Accessibility & contrast

On white

4.61

#247BB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#247BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #247BB2

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##247BB2	#FFFFFF	#000000	##FFFFFF
##247BB2	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#617CB4

Deuteranopia (green-blind)

#4E6FB1

Tritanopia (blue-blind)

#00898E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #247bb2;
/* rgb */ color: rgb(36, 123, 178);
/* oklch */ color: oklch(55.9% 0.117 241.7);

Tailwind

colors: {
  custom: {
    50: '#75a1c9',
    500: '#247bb2',
    950: '#000000',
  },
}

SCSS

$custom: #247bb2;
$custom-light: #75a1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#247bb2",
  "rgb": {
    "r": 36,
    "g": 123,
    "b": 178
  },
  "hsl": {
    "h": 203.239,
    "s": 66.355,
    "l": 41.961
  },
  "oklch": {
    "l": 0.55882,
    "c": 0.11664,
    "h": 241.7
  },
  "luminance": 0.17755
}

Semantic roles & 50–950 ramp

primary

#247BB2

secondary

#C88E69

accent

#813FE9

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #247BB2

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

Preview Lab → · Contrast checker → · Palette generator →