#307AB1#307AB1

#307AB1 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.9% C 0.112 H 244.4°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#307AB1
RGB	rgb(48, 122, 177)
HSL	hsl(206, 57%, 44%)
HSV	hsv(206, 73%, 69%)
CMYK	cmyk(72.9%, 31.1%, 0%, 30.6%)
CIE-LAB	lab(49.15, -4.12, -35.70)
CIE-LCH	lch(49.15, 35.94, 263.41°)
OKLab	oklab(55.92% -0.0484 -0.1011)
OKLCH	oklch(55.92% 0.112 244.4)
XYZ	xyz(16.1112, 17.7200, 44.1576)
Luminance	0.1772 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307AB1 #B16730

analogous

#30B1A8 #307AB1 #303AB1

triadic

#307AB1 #B1307A #7AB130

tetradic

#307AB1 #A830B1 #B16730 #3AB130

square

#307AB1 #A830B1 #B16730 #3AB130

split-complementary

#307AB1 #B1303A #B1A830

monochromatic

#163851 #235981 #307AB1 #4F99CF #7FB5DC

Accessibility & contrast

On white

4.62

#307AB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#307AB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #307AB1

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307AB1	#FFFFFF	#000000	##FFFFFF
##307AB1	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#617CB3

Deuteranopia (green-blind)

#4F6FB0

Tritanopia (blue-blind)

#00878D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #307ab1;
/* rgb */ color: rgb(48, 122, 177);
/* oklch */ color: oklch(55.9% 0.112 244.4);

Tailwind

colors: {
  custom: {
    50: '#79a0c8',
    500: '#307ab1',
    950: '#000000',
  },
}

SCSS

$custom: #307ab1;
$custom-light: #79a0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#307ab1",
  "rgb": {
    "r": 48,
    "g": 122,
    "b": 177
  },
  "hsl": {
    "h": 205.581,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.55922,
    "c": 0.11207,
    "h": 244.4
  },
  "luminance": 0.17722
}

Semantic roles & 50–950 ramp

primary

#307AB1

secondary

#C59978

accent

#8947E1

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #307AB1

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

Preview Lab → · Contrast checker → · Palette generator →