#307CBB#307CBB

#307CBB is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.122 H 247.2°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#307CBB
RGB	rgb(48, 124, 187)
HSL	hsl(207, 59%, 46%)
HSV	hsv(207, 74%, 73%)
CMYK	cmyk(74.3%, 33.7%, 0%, 26.7%)
CIE-LAB	lab(50.25, -1.70, -39.75)
CIE-LCH	lch(50.25, 39.78, 267.55°)
OKLab	oklab(56.95% -0.0473 -0.1129)
OKLCH	oklch(56.95% 0.122 247.2)
XYZ	xyz(17.3928, 18.6295, 49.6833)
Luminance	0.1863 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307CBB #BB6F30

analogous

#30BBB4 #307CBB #3036BB

triadic

#307CBB #BB307C #7CBB30

tetradic

#307CBB #B430BB #BB6F30 #36BB30

square

#307CBB #B430BB #BB6F30 #36BB30

split-complementary

#307CBB #BB3036 #BBB430

monochromatic

#173B5A #235C8A #307CBB #559AD3 #86B7E0

Accessibility & contrast

On white

4.44

#307CBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#307CBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307CBB

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307CBB	#FFFFFF	#000000	##000000
##307CBB	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7FBE

Deuteranopia (green-blind)

#4B72BA

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307cbb;
/* rgb */ color: rgb(48, 124, 187);
/* oklch */ color: oklch(57.0% 0.122 247.2);

Tailwind

colors: {
  custom: {
    50: '#7ba1d0',
    500: '#307cbb',
    950: '#000000',
  },
}

SCSS

$custom: #307cbb;
$custom-light: #7ba1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#307cbb",
  "rgb": {
    "r": 48,
    "g": 124,
    "b": 187
  },
  "hsl": {
    "h": 207.194,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5695,
    "c": 0.12238,
    "h": 247.2
  },
  "luminance": 0.18632
}

Semantic roles & 50–950 ramp

primary

#307CBB

secondary

#C9A07D

accent

#8D45E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #307CBB

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

Preview Lab → · Contrast checker → · Palette generator →