#307BC5#307BC5

#307BC5 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.3% C 0.136 H 251.2°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#307BC5
RGB	rgb(48, 123, 197)
HSL	hsl(210, 61%, 48%)
HSV	hsv(210, 76%, 77%)
CMYK	cmyk(75.6%, 37.6%, 0%, 22.7%)
CIE-LAB	lab(50.48, 2.57, -45.12)
CIE-LCH	lch(50.48, 45.19, 273.26°)
OKLab	oklab(57.3% -0.0437 -0.1286)
OKLCH	oklch(57.3% 0.136 251.2)
XYZ	xyz(18.3761, 18.8234, 55.4773)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BC5 #C57A30

analogous

#30C5C4 #307BC5 #3030C5

triadic

#307BC5 #C5307B #7BC530

tetradic

#307BC5 #C430C5 #C57A30 #30C530

square

#307BC5 #C430C5 #C57A30 #30C530

split-complementary

#307BC5 #C53030 #C5C430

monochromatic

#183E63 #245C94 #307BC5 #5B9AD7 #8CB8E3

Accessibility & contrast

On white

4.41

#307BC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#307BC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307BC5

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307BC5	#FFFFFF	#000000	##000000
##307BC5	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5880C8

Deuteranopia (green-blind)

#4272C4

Tritanopia (blue-blind)

#008D96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307bc5;
/* rgb */ color: rgb(48, 123, 197);
/* oklch */ color: oklch(57.3% 0.136 251.2);

Tailwind

colors: {
  custom: {
    50: '#7da0d7',
    500: '#307bc5',
    950: '#000000',
  },
}

SCSS

$custom: #307bc5;
$custom-light: #7da0d7;
$custom-dark: #000000;

JSON

{
  "hex": "#307bc5",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 197
  },
  "hsl": {
    "h": 209.799,
    "s": 60.816,
    "l": 48.039
  },
  "oklch": {
    "l": 0.573,
    "c": 0.13582,
    "h": 251.2
  },
  "luminance": 0.18826
}

Semantic roles & 50–950 ramp

primary

#307BC5

secondary

#CDA884

accent

#9344E4

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #307BC5

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

Preview Lab → · Contrast checker → · Palette generator →