#307AB3#307AB3

#307AB3 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.0% C 0.114 H 245.3°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#307AB3
RGB	rgb(48, 122, 179)
HSL	hsl(206, 58%, 45%)
HSV	hsv(206, 73%, 70%)
CMYK	cmyk(73.2%, 31.8%, 0%, 29.8%)
CIE-LAB	lab(49.25, -3.40, -36.71)
CIE-LCH	lch(49.25, 36.86, 264.70°)
OKLab	oklab(56.03% -0.0478 -0.104)
OKLCH	oklch(56.03% 0.114 245.3)
XYZ	xyz(16.3120, 17.8003, 45.2152)
Luminance	0.1780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307AB3 #B36930

analogous

#30B3AB #307AB3 #3039B3

triadic

#307AB3 #B3307A #7AB330

tetradic

#307AB3 #AB30B3 #B36930 #39B330

square

#307AB3 #AB30B3 #B36930 #39B330

split-complementary

#307AB3 #B33039 #B3AB30

monochromatic

#163852 #235983 #307AB3 #5098D0 #80B5DD

Accessibility & contrast

On white

4.60

#307AB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#307AB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #307AB3

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307AB3	#FFFFFF	#000000	##FFFFFF
##307AB3	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607CB5

Deuteranopia (green-blind)

#4E70B2

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #307ab3;
/* rgb */ color: rgb(48, 122, 179);
/* oklch */ color: oklch(56.0% 0.114 245.3);

Tailwind

colors: {
  custom: {
    50: '#79a0ca',
    500: '#307ab3',
    950: '#000000',
  },
}

SCSS

$custom: #307ab3;
$custom-light: #79a0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#307ab3",
  "rgb": {
    "r": 48,
    "g": 122,
    "b": 179
  },
  "hsl": {
    "h": 206.107,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.56032,
    "c": 0.11445,
    "h": 245.3
  },
  "luminance": 0.17802
}

Semantic roles & 50–950 ramp

primary

#307AB3

secondary

#C69A79

accent

#8A47E1

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #307AB3

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

Preview Lab → · Contrast checker → · Palette generator →