#307CB3#307CB3

#307CB3 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.5% C 0.113 H 243.8°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#307CB3
RGB	rgb(48, 124, 179)
HSL	hsl(205, 58%, 45%)
HSV	hsv(205, 73%, 70%)
CMYK	cmyk(73.2%, 30.7%, 0%, 29.8%)
CIE-LAB	lab(49.85, -4.59, -35.76)
CIE-LCH	lch(49.85, 36.06, 262.69°)
OKLab	oklab(56.51% -0.0497 -0.1012)
OKLCH	oklch(56.51% 0.113 243.8)
XYZ	xyz(16.5601, 18.2965, 45.2979)
Luminance	0.1830 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307CB3 #B36730

analogous

#30B3A9 #307CB3 #303BB3

triadic

#307CB3 #B3307C #7CB330

tetradic

#307CB3 #A930B3 #B36730 #3BB330

square

#307CB3 #A930B3 #B36730 #3BB330

split-complementary

#307CB3 #B3303B #B3A930

monochromatic

#163952 #235B83 #307CB3 #509AD0 #80B6DD

Accessibility & contrast

On white

4.51

#307CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#307CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307CB3

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307CB3	#FFFFFF	#000000	##000000
##307CB3	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB5

Deuteranopia (green-blind)

#5171B2

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #307cb3;
/* rgb */ color: rgb(48, 124, 179);
/* oklch */ color: oklch(56.5% 0.113 243.8);

Tailwind

colors: {
  custom: {
    50: '#79a1ca',
    500: '#307cb3',
    950: '#000000',
  },
}

SCSS

$custom: #307cb3;
$custom-light: #79a1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#307cb3",
  "rgb": {
    "r": 48,
    "g": 124,
    "b": 179
  },
  "hsl": {
    "h": 205.191,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.56506,
    "c": 0.11279,
    "h": 243.8
  },
  "luminance": 0.18298
}

Semantic roles & 50–950 ramp

primary

#307CB3

secondary

#C69979

accent

#8847E1

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #307CB3

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

Preview Lab → · Contrast checker → · Palette generator →