#307BB5#307BB5

#307BB5 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.4% C 0.116 H 245.5°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#307BB5
RGB	rgb(48, 123, 181)
HSL	hsl(206, 58%, 45%)
HSV	hsv(206, 73%, 71%)
CMYK	cmyk(73.5%, 32%, 0%, 29%)
CIE-LAB	lab(49.65, -3.28, -37.24)
CIE-LCH	lch(49.65, 37.38, 264.97°)
OKLab	oklab(56.38% -0.0481 -0.1055)
OKLCH	oklch(56.38% 0.116 245.5)
XYZ	xyz(16.6392, 18.1286, 46.3293)
Luminance	0.1813 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BB5 #B56A30

analogous

#30B5AC #307BB5 #3039B5

triadic

#307BB5 #B5307B #7BB530

tetradic

#307BB5 #AC30B5 #B56A30 #39B530

square

#307BB5 #AC30B5 #B56A30 #39B530

split-complementary

#307BB5 #B53039 #B5AC30

monochromatic

#163954 #235A85 #307BB5 #5199D1 #82B6DE

Accessibility & contrast

On white

4.54

#307BB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#307BB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307BB5

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307BB5	#FFFFFF	#000000	##000000
##307BB5	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617DB8

Deuteranopia (green-blind)

#4E70B4

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #307bb5;
/* rgb */ color: rgb(48, 123, 181);
/* oklch */ color: oklch(56.4% 0.116 245.5);

Tailwind

colors: {
  custom: {
    50: '#7aa0cb',
    500: '#307bb5',
    950: '#000000',
  },
}

SCSS

$custom: #307bb5;
$custom-light: #7aa0cb;
$custom-dark: #000000;

JSON

{
  "hex": "#307bb5",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 181
  },
  "hsl": {
    "h": 206.165,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56379,
    "c": 0.116,
    "h": 245.5
  },
  "luminance": 0.1813
}

Semantic roles & 50–950 ramp

primary

#307BB5

secondary

#C79B7A

accent

#8A46E1

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #307BB5

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

Preview Lab → · Contrast checker → · Palette generator →