#307BB9#307BB9

#307BB9 is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.6% C 0.121 H 247.1°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#307BB9
RGB	rgb(48, 123, 185)
HSL	hsl(207, 59%, 46%)
HSV	hsv(207, 74%, 73%)
CMYK	cmyk(74.1%, 33.5%, 0%, 27.5%)
CIE-LAB	lab(49.85, -1.83, -39.23)
CIE-LCH	lch(49.85, 39.27, 267.33°)
OKLab	oklab(56.6% -0.0469 -0.1113)
OKLCH	oklch(56.6% 0.121 247.1)
XYZ	xyz(17.0555, 18.2951, 48.5220)
Luminance	0.1830 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BB9 #B96E30

analogous

#30B9B2 #307BB9 #3037B9

triadic

#307BB9 #B9307B #7BB930

tetradic

#307BB9 #B230B9 #B96E30 #37B930

square

#307BB9 #B230B9 #B96E30 #37B930

split-complementary

#307BB9 #B93037 #B9B230

monochromatic

#173A58 #235B88 #307BB9 #5499D3 #84B6DF

Accessibility & contrast

On white

4.51

#307BB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#307BB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307BB9

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307BB9	#FFFFFF	#000000	##000000
##307BB9	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)

#5F7EBC

Deuteranopia (green-blind)

#4B71B8

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #307bb9;
/* rgb */ color: rgb(48, 123, 185);
/* oklch */ color: oklch(56.6% 0.121 247.1);

Tailwind

colors: {
  custom: {
    50: '#7aa0ce',
    500: '#307bb9',
    950: '#000000',
  },
}

SCSS

$custom: #307bb9;
$custom-light: #7aa0ce;
$custom-dark: #000000;

JSON

{
  "hex": "#307bb9",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 185
  },
  "hsl": {
    "h": 207.153,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.56603,
    "c": 0.12084,
    "h": 247.1
  },
  "luminance": 0.18297
}

Semantic roles & 50–950 ramp

primary

#307BB9

secondary

#C99F7C

accent

#8C46E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #307BB9

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

Preview Lab → · Contrast checker → · Palette generator →