#307FAB#307FAB

#307FAB is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.8% C 0.102 H 237.0°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#307FAB
RGB	rgb(48, 127, 171)
HSL	hsl(201, 56%, 43%)
HSV	hsv(201, 72%, 67%)
CMYK	cmyk(71.9%, 25.7%, 0%, 32.9%)
CIE-LAB	lab(50.39, -9.18, -30.30)
CIE-LCH	lch(50.39, 31.66, 253.14°)
OKLab	oklab(56.81% -0.0553 -0.0853)
OKLCH	oklch(56.81% 0.102 237)
XYZ	xyz(16.1561, 18.7456, 41.2870)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307FAB #AB5C30

analogous

#30AB99 #307FAB #3042AB

triadic

#307FAB #AB307F #7FAB30

tetradic

#307FAB #9930AB #AB5C30 #42AB30

square

#307FAB #9930AB #AB5C30 #42AB30

split-complementary

#307FAB #AB3042 #AB9930

monochromatic

#15384B #235C7B #307FAB #4C9ECD #7BB8DA

Accessibility & contrast

On white

4.42

#307FAB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#307FAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307FAB

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307FAB	#FFFFFF	#000000	##000000
##307FAB	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7FAD

Deuteranopia (green-blind)

#5973AA

Tritanopia (blue-blind)

#008A8E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307fab;
/* rgb */ color: rgb(48, 127, 171);
/* oklch */ color: oklch(56.8% 0.102 237.0);

Tailwind

colors: {
  custom: {
    50: '#78a4c4',
    500: '#307fab',
    950: '#000000',
  },
}

SCSS

$custom: #307fab;
$custom-light: #78a4c4;
$custom-dark: #000000;

JSON

{
  "hex": "#307fab",
  "rgb": {
    "r": 48,
    "g": 127,
    "b": 171
  },
  "hsl": {
    "h": 201.463,
    "s": 56.164,
    "l": 42.941
  },
  "oklch": {
    "l": 0.56807,
    "c": 0.10172,
    "h": 237
  },
  "luminance": 0.18747
}

Semantic roles & 50–950 ramp

primary

#307FAB

secondary

#C39074

accent

#7E48DF

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #307FAB

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

Preview Lab → · Contrast checker → · Palette generator →