#306FB3#306FB3

#306FB3 is a mid, vivid cyan. Relative luminance 0.153; OKLCH L 53.5% C 0.125 H 252.7°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#306FB3
RGB	rgb(48, 111, 179)
HSL	hsl(211, 58%, 45%)
HSV	hsv(211, 73%, 70%)
CMYK	cmyk(73.2%, 38%, 0%, 29.8%)
CIE-LAB	lab(45.98, 3.29, -41.89)
CIE-LCH	lch(45.98, 42.02, 274.49°)
OKLab	oklab(53.46% -0.0372 -0.1193)
OKLCH	oklch(53.46% 0.125 252.7)
XYZ	xyz(15.0370, 15.2503, 44.7902)
Luminance	0.1525 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306FB3 #B37430

analogous

#30B1B3 #306FB3 #3330B3

triadic

#306FB3 #B3306F #6FB330

tetradic

#306FB3 #B330B1 #B37430 #30B333

square

#306FB3 #B330B1 #B37430 #30B333

split-complementary

#306FB3 #B33330 #B1B330

monochromatic

#163352 #235183 #306FB3 #508ED0 #80ADDD

Accessibility & contrast

On white

5.18

#306FB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#306FB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306FB3

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306FB3	#FFFFFF	#000000	##FFFFFF
##306FB3	1.00	5.18	4.05	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5074B6

Deuteranopia (green-blind)

#3C67B2

Tritanopia (blue-blind)

#007F88

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #306fb3;
/* rgb */ color: rgb(48, 111, 179);
/* oklch */ color: oklch(53.5% 0.125 252.7);

Tailwind

colors: {
  custom: {
    50: '#7997ca',
    500: '#306fb3',
    950: '#000000',
  },
}

SCSS

$custom: #306fb3;
$custom-light: #7997ca;
$custom-dark: #000000;

JSON

{
  "hex": "#306fb3",
  "rgb": {
    "r": 48,
    "g": 111,
    "b": 179
  },
  "hsl": {
    "h": 211.145,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.53458,
    "c": 0.12497,
    "h": 252.7
  },
  "luminance": 0.15252
}

Semantic roles & 50–950 ramp

primary

#306FB3

secondary

#C6A179

accent

#9747E1

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #306FB3

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

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