#307A9B#307A9B

#307A9B is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 54.8% C 0.088 H 230.8°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#307A9B
RGB	rgb(48, 122, 155)
HSL	hsl(199, 53%, 40%)
HSV	hsv(199, 69%, 61%)
CMYK	cmyk(69%, 21.3%, 0%, 39.2%)
CIE-LAB	lab(48.15, -11.87, -24.45)
CIE-LCH	lch(48.15, 27.18, 244.11°)
OKLab	oklab(54.79% -0.0559 -0.0685)
OKLCH	oklch(54.79% 0.088 230.8)
XYZ	xyz(14.0925, 16.9125, 33.5257)
Luminance	0.1691 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307A9B #9B5130

analogous

#309B87 #307A9B #30449B

triadic

#307A9B #9B307A #7A9B30

tetradic

#307A9B #87309B #9B5130 #449B30

square

#307A9B #87309B #9B5130 #449B30

split-complementary

#307A9B #9B3044 #9B8730

monochromatic

#13303E #22556C #307A9B #439DC5 #72B5D3

Accessibility & contrast

On white

4.79

#307A9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#307A9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #307A9B

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307A9B	#FFFFFF	#000000	##FFFFFF
##307A9B	1.00	4.79	4.38	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69789D

Deuteranopia (green-blind)

#5B6E9B

Tritanopia (blue-blind)

#008385

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #307a9b;
/* rgb */ color: rgb(48, 122, 155);
/* oklch */ color: oklch(54.8% 0.088 230.8);

Tailwind

colors: {
  custom: {
    50: '#75a0b8',
    500: '#307a9b',
    950: '#000000',
  },
}

SCSS

$custom: #307a9b;
$custom-light: #75a0b8;
$custom-dark: #000000;

JSON

{
  "hex": "#307a9b",
  "rgb": {
    "r": 48,
    "g": 122,
    "b": 155
  },
  "hsl": {
    "h": 198.505,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.54794,
    "c": 0.08844,
    "h": 230.8
  },
  "luminance": 0.16914
}

Semantic roles & 50–950 ramp

primary

#307A9B

secondary

#BB846C

accent

#784CDC

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #307A9B

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

Preview Lab → · Contrast checker → · Palette generator →