#307D9B#307D9B

#307D9B is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.5% C 0.087 H 227.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#307D9B
RGB	rgb(48, 125, 155)
HSL	hsl(197, 53%, 40%)
HSV	hsv(197, 69%, 61%)
CMYK	cmyk(69%, 19.4%, 0%, 39.2%)
CIE-LAB	lab(49.08, -13.57, -23.01)
CIE-LCH	lch(49.08, 26.71, 239.48°)
OKLab	oklab(55.54% -0.0591 -0.0644)
OKLCH	oklch(55.54% 0.087 227.4)
XYZ	xyz(14.4666, 17.6606, 33.6504)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307D9B #9B4E30

analogous

#309B83 #307D9B #30489B

triadic

#307D9B #9B307D #7D9B30

tetradic

#307D9B #83309B #9B4E30 #489B30

square

#307D9B #83309B #9B4E30 #489B30

split-complementary

#307D9B #9B3048 #9B8330

monochromatic

#13323E #22576C #307D9B #43A1C5 #72B8D3

Accessibility & contrast

On white

4.63

#307D9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#307D9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #307D9B

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307D9B	#FFFFFF	#000000	##FFFFFF
##307D9B	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7B9D

Deuteranopia (green-blind)

#5E709B

Tritanopia (blue-blind)

#008687

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #307d9b;
/* rgb */ color: rgb(48, 125, 155);
/* oklch */ color: oklch(55.5% 0.087 227.4);

Tailwind

colors: {
  custom: {
    50: '#76a2b8',
    500: '#307d9b',
    950: '#000000',
  },
}

SCSS

$custom: #307d9b;
$custom-light: #76a2b8;
$custom-dark: #000000;

JSON

{
  "hex": "#307d9b",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 155
  },
  "hsl": {
    "h": 196.822,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.55538,
    "c": 0.08741,
    "h": 227.4
  },
  "luminance": 0.17662
}

Semantic roles & 50–950 ramp

primary

#307D9B

secondary

#BB826C

accent

#744CDC

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #307D9B

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

Preview Lab → · Contrast checker → · Palette generator →