#307BB8#307BB8

#307BB8 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.5% C 0.120 H 246.7°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#307BB8
RGB	rgb(48, 123, 184)
HSL	hsl(207, 59%, 45%)
HSV	hsv(207, 74%, 72%)
CMYK	cmyk(73.9%, 33.2%, 0%, 27.8%)
CIE-LAB	lab(49.80, -2.19, -38.73)
CIE-LCH	lch(49.80, 38.79, 266.76°)
OKLab	oklab(56.55% -0.0472 -0.1099)
OKLCH	oklch(56.55% 0.12 246.7)
XYZ	xyz(16.9503, 18.2531, 47.9680)
Luminance	0.1825 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BB8 #B86D30

analogous

#30B8B1 #307BB8 #3037B8

triadic

#307BB8 #B8307B #7BB830

tetradic

#307BB8 #B130B8 #B86D30 #37B830

square

#307BB8 #B130B8 #B86D30 #37B830

split-complementary

#307BB8 #B83037 #B8B130

monochromatic

#173A57 #235B87 #307BB8 #5399D2 #84B6DF

Accessibility & contrast

On white

4.52

#307BB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#307BB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307BB8

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307BB8	#FFFFFF	#000000	##000000
##307BB8	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7DBB

Deuteranopia (green-blind)

#4C71B7

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #307bb8;
/* rgb */ color: rgb(48, 123, 184);
/* oklch */ color: oklch(56.5% 0.120 246.7);

Tailwind

colors: {
  custom: {
    50: '#7aa0cd',
    500: '#307bb8',
    950: '#000000',
  },
}

SCSS

$custom: #307bb8;
$custom-light: #7aa0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#307bb8",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 184
  },
  "hsl": {
    "h": 206.912,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.56546,
    "c": 0.11962,
    "h": 246.7
  },
  "luminance": 0.18255
}

Semantic roles & 50–950 ramp

primary

#307BB8

secondary

#C89E7C

accent

#8C46E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #307BB8

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

Preview Lab → · Contrast checker → · Palette generator →