#307B9B#307B9B

#307B9B is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.0% C 0.088 H 229.7°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#307B9B
RGB	rgb(48, 123, 155)
HSL	hsl(198, 53%, 40%)
HSV	hsv(198, 69%, 61%)
CMYK	cmyk(69%, 20.6%, 0%, 39.2%)
CIE-LAB	lab(48.46, -12.44, -23.97)
CIE-LCH	lch(48.46, 27.00, 242.58°)
OKLab	oklab(55.04% -0.057 -0.0671)
OKLCH	oklch(55.04% 0.088 229.7)
XYZ	xyz(14.2159, 17.1593, 33.5669)
Luminance	0.1716 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307B9B #9B5030

analogous

#309B86 #307B9B #30469B

triadic

#307B9B #9B307B #7B9B30

tetradic

#307B9B #86309B #9B5030 #469B30

square

#307B9B #86309B #9B5030 #469B30

split-complementary

#307B9B #9B3046 #9B8630

monochromatic

#13313E #22566C #307B9B #439EC5 #72B6D3

Accessibility & contrast

On white

4.74

#307B9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#307B9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #307B9B

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307B9B	#FFFFFF	#000000	##FFFFFF
##307B9B	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B799D

Deuteranopia (green-blind)

#5C6E9B

Tritanopia (blue-blind)

#008486

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #307b9b;
/* rgb */ color: rgb(48, 123, 155);
/* oklch */ color: oklch(55.0% 0.088 229.7);

Tailwind

colors: {
  custom: {
    50: '#76a1b8',
    500: '#307b9b',
    950: '#000000',
  },
}

SCSS

$custom: #307b9b;
$custom-light: #76a1b8;
$custom-dark: #000000;

JSON

{
  "hex": "#307b9b",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 155
  },
  "hsl": {
    "h": 197.944,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.55042,
    "c": 0.08806,
    "h": 229.7
  },
  "luminance": 0.17161
}

Semantic roles & 50–950 ramp

primary

#307B9B

secondary

#BB836C

accent

#774CDC

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #307B9B

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

Preview Lab → · Contrast checker → · Palette generator →