#307FB8#307FB8

#307FB8 is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.5% C 0.116 H 243.9°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#307FB8
RGB	rgb(48, 127, 184)
HSL	hsl(205, 59%, 45%)
HSV	hsv(205, 74%, 72%)
CMYK	cmyk(73.9%, 31%, 0%, 27.8%)
CIE-LAB	lab(51.00, -4.57, -36.85)
CIE-LCH	lch(51.00, 37.13, 262.94°)
OKLab	oklab(57.49% -0.0511 -0.1044)
OKLCH	oklch(57.49% 0.116 243.9)
XYZ	xyz(17.4567, 19.2658, 48.1368)
Luminance	0.1927 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307FB8 #B86930

analogous

#30B8AD #307FB8 #303BB8

triadic

#307FB8 #B8307F #7FB830

tetradic

#307FB8 #AD30B8 #B86930 #3BB830

square

#307FB8 #AD30B8 #B86930 #3BB830

split-complementary

#307FB8 #B8303B #B8AD30

monochromatic

#173C57 #235D87 #307FB8 #539DD2 #84B9DF

Accessibility & contrast

On white

4.33

#307FB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#307FB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307FB8

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307FB8	#FFFFFF	#000000	##000000
##307FB8	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6581BA

Deuteranopia (green-blind)

#5274B7

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #307fb8;
/* rgb */ color: rgb(48, 127, 184);
/* oklch */ color: oklch(57.5% 0.116 243.9);

Tailwind

colors: {
  custom: {
    50: '#7aa3cd',
    500: '#307fb8',
    950: '#000000',
  },
}

SCSS

$custom: #307fb8;
$custom-light: #7aa3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#307fb8",
  "rgb": {
    "r": 48,
    "g": 127,
    "b": 184
  },
  "hsl": {
    "h": 205.147,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.57489,
    "c": 0.11619,
    "h": 243.9
  },
  "luminance": 0.19268
}

Semantic roles & 50–950 ramp

primary

#307FB8

secondary

#C89C7C

accent

#8746E2

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #307FB8

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

Preview Lab → · Contrast checker → · Palette generator →