#306BB3#306BB3

#306BB3 is a mid, vivid cyan. Relative luminance 0.144; OKLCH L 52.5% C 0.129 H 255.0°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#306BB3
RGB	rgb(48, 107, 179)
HSL	hsl(213, 58%, 45%)
HSV	hsv(213, 73%, 70%)
CMYK	cmyk(73.2%, 40.2%, 0%, 29.8%)
CIE-LAB	lab(44.80, 5.79, -43.76)
CIE-LCH	lch(44.80, 44.14, 277.53°)
OKLab	oklab(52.54% -0.0334 -0.1249)
OKLCH	oklch(52.54% 0.129 255)
XYZ	xyz(14.6103, 14.3968, 44.6480)
Luminance	0.1440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306BB3 #B37830

analogous

#30ADB3 #306BB3 #3730B3

triadic

#306BB3 #B3306B #6BB330

tetradic

#306BB3 #B330AD #B37830 #30B337

square

#306BB3 #B330AD #B37830 #30B337

split-complementary

#306BB3 #B33730 #ADB330

monochromatic

#163152 #234E83 #306BB3 #508AD0 #80AADD

Accessibility & contrast

On white

5.41

#306BB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#306BB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306BB3

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306BB3	#FFFFFF	#000000	##FFFFFF
##306BB3	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4971B6

Deuteranopia (green-blind)

#3464B2

Tritanopia (blue-blind)

#007C86

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #306bb3;
/* rgb */ color: rgb(48, 107, 179);
/* oklch */ color: oklch(52.5% 0.129 255.0);

Tailwind

colors: {
  custom: {
    50: '#7994ca',
    500: '#306bb3',
    950: '#000000',
  },
}

SCSS

$custom: #306bb3;
$custom-light: #7994ca;
$custom-dark: #000000;

JSON

{
  "hex": "#306bb3",
  "rgb": {
    "r": 48,
    "g": 107,
    "b": 179
  },
  "hsl": {
    "h": 212.977,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.52539,
    "c": 0.12927,
    "h": 255
  },
  "luminance": 0.14398
}

Semantic roles & 50–950 ramp

primary

#306BB3

secondary

#C6A379

accent

#9C47E1

background

#F7F9FC

surface

#EEF1F8

border

#C9CBD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #306BB3

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

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