#306FB4#306FB4

#306FB4 is a mid, vivid cyan. Relative luminance 0.153; OKLCH L 53.5% C 0.126 H 253.0°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#306FB4
RGB	rgb(48, 111, 180)
HSL	hsl(211, 58%, 45%)
HSV	hsv(211, 73%, 71%)
CMYK	cmyk(73.3%, 38.3%, 0%, 29.4%)
CIE-LAB	lab(46.03, 3.66, -42.38)
CIE-LCH	lch(46.03, 42.54, 274.93°)
OKLab	oklab(53.52% -0.0369 -0.1208)
OKLCH	oklch(53.52% 0.126 253)
XYZ	xyz(15.1385, 15.2909, 45.3248)
Luminance	0.1529 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306FB4 #B47530

analogous

#30B1B4 #306FB4 #3330B4

triadic

#306FB4 #B4306F #6FB430

tetradic

#306FB4 #B430B1 #B47530 #30B433

square

#306FB4 #B430B1 #B47530 #30B433

split-complementary

#306FB4 #B43330 #B1B430

monochromatic

#163353 #235184 #306FB4 #518ED1 #81ADDD

Accessibility & contrast

On white

5.17

#306FB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#306FB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306FB4

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306FB4	#FFFFFF	#000000	##FFFFFF
##306FB4	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F74B7

Deuteranopia (green-blind)

#3B67B3

Tritanopia (blue-blind)

#007F89

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #306fb4;
/* rgb */ color: rgb(48, 111, 180);
/* oklch */ color: oklch(53.5% 0.126 253.0);

Tailwind

colors: {
  custom: {
    50: '#7997cb',
    500: '#306fb4',
    950: '#000000',
  },
}

SCSS

$custom: #306fb4;
$custom-light: #7997cb;
$custom-dark: #000000;

JSON

{
  "hex": "#306fb4",
  "rgb": {
    "r": 48,
    "g": 111,
    "b": 180
  },
  "hsl": {
    "h": 211.364,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.53519,
    "c": 0.12628,
    "h": 253
  },
  "luminance": 0.15293
}

Semantic roles & 50–950 ramp

primary

#306FB4

secondary

#C6A279

accent

#9747E1

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #306FB4

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

Preview Lab → · Contrast checker → · Palette generator →