#306BB5#306BB5

#306BB5 is a mid, vivid cyan. Relative luminance 0.145; OKLCH L 52.7% C 0.132 H 255.5°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#306BB5
RGB	rgb(48, 107, 181)
HSL	hsl(213, 58%, 45%)
HSV	hsv(213, 73%, 71%)
CMYK	cmyk(73.5%, 40.9%, 0%, 29%)
CIE-LAB	lab(44.91, 6.53, -44.75)
CIE-LCH	lch(44.91, 45.22, 278.30°)
OKLab	oklab(52.66% -0.0329 -0.1278)
OKLCH	oklch(52.66% 0.132 255.5)
XYZ	xyz(14.8140, 14.4783, 45.7210)
Luminance	0.1448 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306BB5 #B57A30

analogous

#30AEB5 #306BB5 #3730B5

triadic

#306BB5 #B5306B #6BB530

tetradic

#306BB5 #B530AE #B57A30 #30B537

square

#306BB5 #B530AE #B57A30 #30B537

split-complementary

#306BB5 #B53730 #AEB530

monochromatic

#163254 #234E85 #306BB5 #518AD1 #82ABDE

Accessibility & contrast

On white

5.39

#306BB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#306BB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306BB5

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306BB5	#FFFFFF	#000000	##FFFFFF
##306BB5	1.00	5.39	3.90	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4871B8

Deuteranopia (green-blind)

#3265B4

Tritanopia (blue-blind)

#007C87

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #306bb5;
/* rgb */ color: rgb(48, 107, 181);
/* oklch */ color: oklch(52.7% 0.132 255.5);

Tailwind

colors: {
  custom: {
    50: '#7a94cb',
    500: '#306bb5',
    950: '#000000',
  },
}

SCSS

$custom: #306bb5;
$custom-light: #7a94cb;
$custom-dark: #000000;

JSON

{
  "hex": "#306bb5",
  "rgb": {
    "r": 48,
    "g": 107,
    "b": 181
  },
  "hsl": {
    "h": 213.383,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.52665,
    "c": 0.13194,
    "h": 255.5
  },
  "luminance": 0.1448
}

Semantic roles & 50–950 ramp

primary

#306BB5

secondary

#C7A57A

accent

#9D46E1

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #306BB5

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

Preview Lab → · Contrast checker → · Palette generator →