#307C9B#307C9B

#307C9B is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.3% C 0.088 H 228.6°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#307C9B
RGB	rgb(48, 124, 155)
HSL	hsl(197, 53%, 40%)
HSV	hsv(197, 69%, 61%)
CMYK	cmyk(69%, 20%, 0%, 39.2%)
CIE-LAB	lab(48.77, -13.00, -23.49)
CIE-LCH	lch(48.77, 26.85, 241.03°)
OKLab	oklab(55.29% -0.058 -0.0658)
OKLCH	oklch(55.29% 0.088 228.6)
XYZ	xyz(14.3406, 17.4087, 33.6084)
Luminance	0.1741 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307C9B #9B4F30

analogous

#309B84 #307C9B #30479B

triadic

#307C9B #9B307C #7C9B30

tetradic

#307C9B #84309B #9B4F30 #479B30

square

#307C9B #84309B #9B4F30 #479B30

split-complementary

#307C9B #9B3047 #9B8430

monochromatic

#13313E #22576C #307C9B #439FC5 #72B7D3

Accessibility & contrast

On white

4.69

#307C9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#307C9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #307C9B

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307C9B	#FFFFFF	#000000	##FFFFFF
##307C9B	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7A9D

Deuteranopia (green-blind)

#5D6F9B

Tritanopia (blue-blind)

#008586

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #307c9b;
/* rgb */ color: rgb(48, 124, 155);
/* oklch */ color: oklch(55.3% 0.088 228.6);

Tailwind

colors: {
  custom: {
    50: '#76a2b8',
    500: '#307c9b',
    950: '#000000',
  },
}

SCSS

$custom: #307c9b;
$custom-light: #76a2b8;
$custom-dark: #000000;

JSON

{
  "hex": "#307c9b",
  "rgb": {
    "r": 48,
    "g": 124,
    "b": 155
  },
  "hsl": {
    "h": 197.383,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.5529,
    "c": 0.08772,
    "h": 228.6
  },
  "luminance": 0.1741
}

Semantic roles & 50–950 ramp

primary

#307C9B

secondary

#BB836C

accent

#764CDC

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #307C9B

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

Preview Lab → · Contrast checker → · Palette generator →