#306FB0#306FB0

#306FB0 is a mid, vivid cyan. Relative luminance 0.151; OKLCH L 53.3% C 0.121 H 251.7°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#306FB0
RGB	rgb(48, 111, 176)
HSL	hsl(210, 57%, 44%)
HSV	hsv(210, 73%, 69%)
CMYK	cmyk(72.7%, 36.9%, 0%, 31%)
CIE-LAB	lab(45.81, 2.18, -40.40)
CIE-LCH	lch(45.81, 40.46, 273.09°)
OKLab	oklab(53.28% -0.0379 -0.1149)
OKLCH	oklch(53.28% 0.121 251.7)
XYZ	xyz(14.7369, 15.1302, 43.2096)
Luminance	0.1513 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306FB0 #B07130

analogous

#30AFB0 #306FB0 #3130B0

triadic

#306FB0 #B0306F #6FB030

tetradic

#306FB0 #B030AF #B07130 #30B031

square

#306FB0 #B030AF #B07130 #30B031

split-complementary

#306FB0 #B03130 #AFB030

monochromatic

#163250 #235180 #306FB0 #4E8ECF #7EACDC

Accessibility & contrast

On white

5.22

#306FB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#306FB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306FB0

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306FB0	#FFFFFF	#000000	##FFFFFF
##306FB0	1.00	5.22	4.03	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5173B3

Deuteranopia (green-blind)

#3E67AF

Tritanopia (blue-blind)

#007E87

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #306fb0;
/* rgb */ color: rgb(48, 111, 176);
/* oklch */ color: oklch(53.3% 0.121 251.7);

Tailwind

colors: {
  custom: {
    50: '#7997c8',
    500: '#306fb0',
    950: '#000000',
  },
}

SCSS

$custom: #306fb0;
$custom-light: #7997c8;
$custom-dark: #000000;

JSON

{
  "hex": "#306fb0",
  "rgb": {
    "r": 48,
    "g": 111,
    "b": 176
  },
  "hsl": {
    "h": 210.469,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.53277,
    "c": 0.12105,
    "h": 251.7
  },
  "luminance": 0.15132
}

Semantic roles & 50–950 ramp

primary

#306FB0

secondary

#C59F77

accent

#9547E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #306FB0

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

Preview Lab → · Contrast checker → · Palette generator →