#306FBB#306FBB

#306FBB is a mid, vivid cyan. Relative luminance 0.156; OKLCH L 54.0% C 0.136 H 254.9°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#306FBB
RGB	rgb(48, 111, 187)
HSL	hsl(213, 59%, 46%)
HSV	hsv(213, 74%, 73%)
CMYK	cmyk(74.3%, 40.6%, 0%, 26.7%)
CIE-LAB	lab(46.42, 6.26, -45.82)
CIE-LCH	lch(46.42, 46.25, 277.78°)
OKLab	oklab(53.95% -0.0352 -0.1308)
OKLCH	oklch(53.95% 0.136 254.9)
XYZ	xyz(15.8697, 15.5833, 49.1756)
Luminance	0.1558 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306FBB #BB7C30

analogous

#30B4BB #306FBB #3630BB

triadic

#306FBB #BB306F #6FBB30

tetradic

#306FBB #BB30B4 #BB7C30 #30BB36

square

#306FBB #BB30B4 #BB7C30 #30BB36

split-complementary

#306FBB #BB3630 #B4BB30

monochromatic

#17355A #23528A #306FBB #558ED3 #86AEE0

Accessibility & contrast

On white

5.10

#306FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#306FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306FBB

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306FBB	#FFFFFF	#000000	##FFFFFF
##306FBB	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B75BE

Deuteranopia (green-blind)

#3468B9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #306fbb;
/* rgb */ color: rgb(48, 111, 187);
/* oklch */ color: oklch(54.0% 0.136 254.9);

Tailwind

colors: {
  custom: {
    50: '#7b97d0',
    500: '#306fbb',
    950: '#000000',
  },
}

SCSS

$custom: #306fbb;
$custom-light: #7b97d0;
$custom-dark: #000000;

JSON

{
  "hex": "#306fbb",
  "rgb": {
    "r": 48,
    "g": 111,
    "b": 187
  },
  "hsl": {
    "h": 212.806,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.53953,
    "c": 0.13551,
    "h": 254.9
  },
  "luminance": 0.15585
}

Semantic roles & 50–950 ramp

primary

#306FBB

secondary

#C9A77D

accent

#9B45E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #306FBB

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

Preview Lab → · Contrast checker → · Palette generator →