#307DB1#307DB1

#307DB1 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.110 H 242.1°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#307DB1
RGB	rgb(48, 125, 177)
HSL	hsl(204, 57%, 44%)
HSV	hsv(204, 73%, 69%)
CMYK	cmyk(72.9%, 29.4%, 0%, 30.6%)
CIE-LAB	lab(50.06, -5.90, -34.28)
CIE-LCH	lch(50.06, 34.79, 260.24°)
OKLab	oklab(56.64% -0.0513 -0.0969)
OKLCH	oklch(56.64% 0.11 242.1)
XYZ	xyz(16.4853, 18.4681, 44.2823)
Luminance	0.1847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307DB1 #B16430

analogous

#30B1A5 #307DB1 #303DB1

triadic

#307DB1 #B1307D #7DB130

tetradic

#307DB1 #A530B1 #B16430 #3DB130

square

#307DB1 #A530B1 #B16430 #3DB130

split-complementary

#307DB1 #B1303D #B1A530

monochromatic

#163951 #235B81 #307DB1 #4F9CCF #7FB7DC

Accessibility & contrast

On white

4.47

#307DB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#307DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307DB1

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307DB1	#FFFFFF	#000000	##000000
##307DB1	1.00	4.47	4.69	4.69
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB3

Deuteranopia (green-blind)

#5372B0

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #307db1;
/* rgb */ color: rgb(48, 125, 177);
/* oklch */ color: oklch(56.6% 0.110 242.1);

Tailwind

colors: {
  custom: {
    50: '#79a2c8',
    500: '#307db1',
    950: '#000000',
  },
}

SCSS

$custom: #307db1;
$custom-light: #79a2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#307db1",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 177
  },
  "hsl": {
    "h": 204.186,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.56637,
    "c": 0.10968,
    "h": 242.1
  },
  "luminance": 0.1847
}

Semantic roles & 50–950 ramp

primary

#307DB1

secondary

#C59778

accent

#8547E1

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #307DB1

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

Preview Lab → · Contrast checker → · Palette generator →