#307BB4#307BB4

#307BB4 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.3% C 0.115 H 245.0°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#307BB4
RGB	rgb(48, 123, 180)
HSL	hsl(206, 58%, 45%)
HSV	hsv(206, 73%, 71%)
CMYK	cmyk(73.3%, 31.7%, 0%, 29.4%)
CIE-LAB	lab(49.60, -3.64, -36.74)
CIE-LCH	lch(49.60, 36.92, 264.35°)
OKLab	oklab(56.32% -0.0484 -0.1041)
OKLCH	oklch(56.32% 0.115 245)
XYZ	xyz(16.5369, 18.0877, 45.7909)
Luminance	0.1809 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BB4 #B46930

analogous

#30B4AB #307BB4 #3039B4

triadic

#307BB4 #B4307B #7BB430

tetradic

#307BB4 #AB30B4 #B46930 #39B430

square

#307BB4 #AB30B4 #B46930 #39B430

split-complementary

#307BB4 #B43039 #B4AB30

monochromatic

#163953 #235A84 #307BB4 #5199D1 #81B6DD

Accessibility & contrast

On white

4.55

#307BB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#307BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307BB4

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307BB4	#FFFFFF	#000000	##000000
##307BB4	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617DB6

Deuteranopia (green-blind)

#4F70B3

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #307bb4;
/* rgb */ color: rgb(48, 123, 180);
/* oklch */ color: oklch(56.3% 0.115 245.0);

Tailwind

colors: {
  custom: {
    50: '#7aa0ca',
    500: '#307bb4',
    950: '#000000',
  },
}

SCSS

$custom: #307bb4;
$custom-light: #7aa0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#307bb4",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 180
  },
  "hsl": {
    "h": 205.909,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.56324,
    "c": 0.1148,
    "h": 245
  },
  "luminance": 0.1809
}

Semantic roles & 50–950 ramp

primary

#307BB4

secondary

#C69B79

accent

#8947E1

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #307BB4

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

Preview Lab → · Contrast checker → · Palette generator →