#307DBB#307DBB

#307DBB is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.2% C 0.121 H 246.6°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#307DBB
RGB	rgb(48, 125, 187)
HSL	hsl(207, 59%, 46%)
HSV	hsv(207, 74%, 73%)
CMYK	cmyk(74.3%, 33.2%, 0%, 26.7%)
CIE-LAB	lab(50.55, -2.30, -39.28)
CIE-LCH	lch(50.55, 39.35, 266.65°)
OKLab	oklab(57.18% -0.0483 -0.1115)
OKLCH	oklch(57.18% 0.121 246.6)
XYZ	xyz(17.5188, 18.8815, 49.7253)
Luminance	0.1888 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307DBB #BB6E30

analogous

#30BBB3 #307DBB #3037BB

triadic

#307DBB #BB307D #7DBB30

tetradic

#307DBB #B330BB #BB6E30 #37BB30

square

#307DBB #B330BB #BB6E30 #37BB30

split-complementary

#307DBB #BB3037 #BBB330

monochromatic

#173C5A #235C8A #307DBB #559BD3 #86B8E0

Accessibility & contrast

On white

4.40

#307DBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#307DBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307DBB

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307DBB	#FFFFFF	#000000	##000000
##307DBB	1.00	4.40	4.78	4.78
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617FBE

Deuteranopia (green-blind)

#4D72BA

Tritanopia (blue-blind)

#008C93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307dbb;
/* rgb */ color: rgb(48, 125, 187);
/* oklch */ color: oklch(57.2% 0.121 246.6);

Tailwind

colors: {
  custom: {
    50: '#7ba2d0',
    500: '#307dbb',
    950: '#000000',
  },
}

SCSS

$custom: #307dbb;
$custom-light: #7ba2d0;
$custom-dark: #000000;

JSON

{
  "hex": "#307dbb",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 187
  },
  "hsl": {
    "h": 206.763,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.57184,
    "c": 0.12148,
    "h": 246.6
  },
  "luminance": 0.18883
}

Semantic roles & 50–950 ramp

primary

#307DBB

secondary

#C99F7D

accent

#8B45E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F14

muted

#7C7E82

Preview Lab

Preview with #307DBB

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

Preview Lab → · Contrast checker → · Palette generator →