#307DB8#307DB8

#307DB8 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.0% C 0.118 H 245.4°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#307DB8
RGB	rgb(48, 125, 184)
HSL	hsl(206, 59%, 45%)
HSV	hsv(206, 74%, 72%)
CMYK	cmyk(73.9%, 32.1%, 0%, 27.8%)
CIE-LAB	lab(50.40, -3.38, -37.79)
CIE-LCH	lch(50.40, 37.94, 264.89°)
OKLab	oklab(57.02% -0.0492 -0.1071)
OKLCH	oklch(57.02% 0.118 245.4)
XYZ	xyz(17.2009, 18.7543, 48.0515)
Luminance	0.1876 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307DB8 #B86B30

analogous

#30B8AF #307DB8 #3039B8

triadic

#307DB8 #B8307D #7DB830

tetradic

#307DB8 #AF30B8 #B86B30 #39B830

square

#307DB8 #AF30B8 #B86B30 #39B830

split-complementary

#307DB8 #B83039 #B8AF30

monochromatic

#173B57 #235C87 #307DB8 #539BD2 #84B7DF

Accessibility & contrast

On white

4.42

#307DB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#307DB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307DB8

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307DB8	#FFFFFF	#000000	##000000
##307DB8	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627FBB

Deuteranopia (green-blind)

#4F72B7

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307db8;
/* rgb */ color: rgb(48, 125, 184);
/* oklch */ color: oklch(57.0% 0.118 245.4);

Tailwind

colors: {
  custom: {
    50: '#7aa2cd',
    500: '#307db8',
    950: '#000000',
  },
}

SCSS

$custom: #307db8;
$custom-light: #7aa2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#307db8",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 184
  },
  "hsl": {
    "h": 206.029,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.57017,
    "c": 0.11787,
    "h": 245.4
  },
  "luminance": 0.18756
}

Semantic roles & 50–950 ramp

primary

#307DB8

secondary

#C89D7C

accent

#8A46E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #307DB8

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

Preview Lab → · Contrast checker → · Palette generator →