#306CB3#306CB3

#306CB3 is a mid, vivid cyan. Relative luminance 0.146; OKLCH L 52.8% C 0.128 H 254.5°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#306CB3
RGB	rgb(48, 108, 179)
HSL	hsl(213, 58%, 45%)
HSV	hsv(213, 73%, 70%)
CMYK	cmyk(73.2%, 39.7%, 0%, 29.8%)
CIE-LAB	lab(45.09, 5.16, -43.30)
CIE-LCH	lch(45.09, 43.60, 276.80°)
OKLab	oklab(52.77% -0.0343 -0.1235)
OKLCH	oklch(52.77% 0.128 254.5)
XYZ	xyz(14.7152, 14.6065, 44.6829)
Luminance	0.1461 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306CB3 #B37730

analogous

#30AEB3 #306CB3 #3630B3

triadic

#306CB3 #B3306C #6CB330

tetradic

#306CB3 #B330AE #B37730 #30B336

square

#306CB3 #B330AE #B37730 #30B336

split-complementary

#306CB3 #B33630 #AEB330

monochromatic

#163252 #234F83 #306CB3 #508BD0 #80ABDD

Accessibility & contrast

On white

5.35

#306CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#306CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306CB3

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306CB3	#FFFFFF	#000000	##FFFFFF
##306CB3	1.00	5.35	3.92	5.35
#FFFFFF	5.35	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B71B6

Deuteranopia (green-blind)

#3665B2

Tritanopia (blue-blind)

#007D87

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #306cb3;
/* rgb */ color: rgb(48, 108, 179);
/* oklch */ color: oklch(52.8% 0.128 254.5);

Tailwind

colors: {
  custom: {
    50: '#7995ca',
    500: '#306cb3',
    950: '#000000',
  },
}

SCSS

$custom: #306cb3;
$custom-light: #7995ca;
$custom-dark: #000000;

JSON

{
  "hex": "#306cb3",
  "rgb": {
    "r": 48,
    "g": 108,
    "b": 179
  },
  "hsl": {
    "h": 212.519,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.52768,
    "c": 0.12817,
    "h": 254.5
  },
  "luminance": 0.14608
}

Semantic roles & 50–950 ramp

primary

#306CB3

secondary

#C6A379

accent

#9A47E1

background

#F7F9FC

surface

#EEF1F8

border

#C9CBD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #306CB3

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

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