#307AB4#307AB4

#307AB4 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.1% C 0.116 H 245.8°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#307AB4
RGB	rgb(48, 122, 180)
HSL	hsl(206, 58%, 45%)
HSV	hsv(206, 73%, 71%)
CMYK	cmyk(73.3%, 32.2%, 0%, 29.4%)
CIE-LAB	lab(49.30, -3.04, -37.21)
CIE-LCH	lch(49.30, 37.33, 265.33°)
OKLab	oklab(56.09% -0.0475 -0.1055)
OKLCH	oklch(56.09% 0.116 245.8)
XYZ	xyz(16.4135, 17.8409, 45.7498)
Luminance	0.1784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307AB4 #B46A30

analogous

#30B4AC #307AB4 #3038B4

triadic

#307AB4 #B4307A #7AB430

tetradic

#307AB4 #AC30B4 #B46A30 #38B430

square

#307AB4 #AC30B4 #B46A30 #38B430

split-complementary

#307AB4 #B43038 #B4AC30

monochromatic

#163953 #235984 #307AB4 #5198D1 #81B5DD

Accessibility & contrast

On white

4.60

#307AB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#307AB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #307AB4

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307AB4	#FFFFFF	#000000	##FFFFFF
##307AB4	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607CB7

Deuteranopia (green-blind)

#4D70B3

Tritanopia (blue-blind)

#00888F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #307ab4;
/* rgb */ color: rgb(48, 122, 180);
/* oklch */ color: oklch(56.1% 0.116 245.8);

Tailwind

colors: {
  custom: {
    50: '#7aa0ca',
    500: '#307ab4',
    950: '#000000',
  },
}

SCSS

$custom: #307ab4;
$custom-light: #7aa0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#307ab4",
  "rgb": {
    "r": 48,
    "g": 122,
    "b": 180
  },
  "hsl": {
    "h": 206.364,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.56087,
    "c": 0.11566,
    "h": 245.8
  },
  "luminance": 0.17843
}

Semantic roles & 50–950 ramp

primary

#307AB4

secondary

#C69B79

accent

#8B47E1

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #307AB4

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

Preview Lab → · Contrast checker → · Palette generator →