#307CB0#307CB0

#307CB0 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.3% C 0.109 H 242.4°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#307CB0
RGB	rgb(48, 124, 176)
HSL	hsl(204, 57%, 44%)
HSV	hsv(204, 73%, 69%)
CMYK	cmyk(72.7%, 29.5%, 0%, 31%)
CIE-LAB	lab(49.71, -5.67, -34.25)
CIE-LCH	lch(49.71, 34.72, 260.61°)
OKLab	oklab(56.35% -0.0507 -0.0968)
OKLCH	oklch(56.35% 0.109 242.4)
XYZ	xyz(16.2600, 18.1764, 43.7173)
Luminance	0.1818 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307CB0 #B06430

analogous

#30B0A4 #307CB0 #303CB0

triadic

#307CB0 #B0307C #7CB030

tetradic

#307CB0 #A430B0 #B06430 #3CB030

square

#307CB0 #A430B0 #B06430 #3CB030

split-complementary

#307CB0 #B0303C #B0A430

monochromatic

#163850 #235A80 #307CB0 #4E9BCF #7EB6DC

Accessibility & contrast

On white

4.53

#307CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#307CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307CB0

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307CB0	#FFFFFF	#000000	##000000
##307CB0	1.00	4.53	4.64	4.64
#FFFFFF	4.53	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)

#647DB2

Deuteranopia (green-blind)

#5271AF

Tritanopia (blue-blind)

#00898E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #307cb0;
/* rgb */ color: rgb(48, 124, 176);
/* oklch */ color: oklch(56.3% 0.109 242.4);

Tailwind

colors: {
  custom: {
    50: '#79a1c8',
    500: '#307cb0',
    950: '#000000',
  },
}

SCSS

$custom: #307cb0;
$custom-light: #79a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#307cb0",
  "rgb": {
    "r": 48,
    "g": 124,
    "b": 176
  },
  "hsl": {
    "h": 204.375,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.56345,
    "c": 0.1093,
    "h": 242.4
  },
  "luminance": 0.18178
}

Semantic roles & 50–950 ramp

primary

#307CB0

secondary

#C59777

accent

#8647E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #307CB0

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

Preview Lab → · Contrast checker → · Palette generator →