#307CB1#307CB1

#307CB1 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.4% C 0.110 H 242.9°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#307CB1
RGB	rgb(48, 124, 177)
HSL	hsl(205, 57%, 44%)
HSV	hsv(205, 73%, 69%)
CMYK	cmyk(72.9%, 29.9%, 0%, 30.6%)
CIE-LAB	lab(49.76, -5.31, -34.76)
CIE-LCH	lch(49.76, 35.16, 261.32°)
OKLab	oklab(56.4% -0.0503 -0.0983)
OKLCH	oklch(56.4% 0.11 242.9)
XYZ	xyz(16.3593, 18.2162, 44.2403)
Luminance	0.1822 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307CB1 #B16530

analogous

#30B1A6 #307CB1 #303CB1

triadic

#307CB1 #B1307C #7CB130

tetradic

#307CB1 #A630B1 #B16530 #3CB130

square

#307CB1 #A630B1 #B16530 #3CB130

split-complementary

#307CB1 #B1303C #B1A630

monochromatic

#163951 #235A81 #307CB1 #4F9BCF #7FB6DC

Accessibility & contrast

On white

4.52

#307CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#307CB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307CB1

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307CB1	#FFFFFF	#000000	##000000
##307CB1	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647DB3

Deuteranopia (green-blind)

#5271B0

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #307cb1;
/* rgb */ color: rgb(48, 124, 177);
/* oklch */ color: oklch(56.4% 0.110 242.9);

Tailwind

colors: {
  custom: {
    50: '#79a1c8',
    500: '#307cb1',
    950: '#000000',
  },
}

SCSS

$custom: #307cb1;
$custom-light: #79a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#307cb1",
  "rgb": {
    "r": 48,
    "g": 124,
    "b": 177
  },
  "hsl": {
    "h": 204.651,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.56398,
    "c": 0.11045,
    "h": 242.9
  },
  "luminance": 0.18218
}

Semantic roles & 50–950 ramp

primary

#307CB1

secondary

#C59778

accent

#8647E1

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #307CB1

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

Preview Lab → · Contrast checker → · Palette generator →