#307FB1#307FB1

#307FB1 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.1% C 0.108 H 240.5°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#307FB1
RGB	rgb(48, 127, 177)
HSL	hsl(203, 57%, 44%)
HSV	hsv(203, 73%, 69%)
CMYK	cmyk(72.9%, 28.2%, 0%, 30.6%)
CIE-LAB	lab(50.66, -7.07, -33.34)
CIE-LCH	lch(50.66, 34.08, 258.03°)
OKLab	oklab(57.12% -0.0533 -0.0941)
OKLCH	oklch(57.12% 0.108 240.5)
XYZ	xyz(16.7410, 18.9795, 44.3676)
Luminance	0.1898 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307FB1 #B16230

analogous

#30B1A3 #307FB1 #303FB1

triadic

#307FB1 #B1307F #7FB130

tetradic

#307FB1 #A330B1 #B16230 #3FB130

square

#307FB1 #A330B1 #B16230 #3FB130

split-complementary

#307FB1 #B1303F #B1A330

monochromatic

#163A51 #235C81 #307FB1 #4F9ECF #7FB8DC

Accessibility & contrast

On white

4.38

#307FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#307FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307FB1

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307FB1	#FFFFFF	#000000	##000000
##307FB1	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687FB3

Deuteranopia (green-blind)

#5673B0

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #307fb1;
/* rgb */ color: rgb(48, 127, 177);
/* oklch */ color: oklch(57.1% 0.108 240.5);

Tailwind

colors: {
  custom: {
    50: '#79a4c8',
    500: '#307fb1',
    950: '#000000',
  },
}

SCSS

$custom: #307fb1;
$custom-light: #79a4c8;
$custom-dark: #000000;

JSON

{
  "hex": "#307fb1",
  "rgb": {
    "r": 48,
    "g": 127,
    "b": 177
  },
  "hsl": {
    "h": 203.256,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.57115,
    "c": 0.1082,
    "h": 240.5
  },
  "luminance": 0.18981
}

Semantic roles & 50–950 ramp

primary

#307FB1

secondary

#C59678

accent

#8347E1

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #307FB1

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

Preview Lab → · Contrast checker → · Palette generator →