#307BAB#307BAB

#307BAB is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.104 H 240.6°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#307BAB
RGB	rgb(48, 123, 171)
HSL	hsl(203, 56%, 43%)
HSV	hsv(203, 72%, 67%)
CMYK	cmyk(71.9%, 28.1%, 0%, 32.9%)
CIE-LAB	lab(49.17, -6.86, -32.20)
CIE-LCH	lch(49.17, 32.92, 257.97°)
OKLab	oklab(55.84% -0.0513 -0.0909)
OKLCH	oklch(55.84% 0.104 240.6)
XYZ	xyz(15.6497, 17.7328, 41.1182)
Luminance	0.1774 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BAB #AB6030

analogous

#30AB9D #307BAB #303DAB

triadic

#307BAB #AB307B #7BAB30

tetradic

#307BAB #9D30AB #AB6030 #3DAB30

square

#307BAB #9D30AB #AB6030 #3DAB30

split-complementary

#307BAB #AB303D #AB9D30

monochromatic

#15364B #23597B #307BAB #4C9ACD #7BB5DA

Accessibility & contrast

On white

4.62

#307BAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#307BAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #307BAB

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307BAB	#FFFFFF	#000000	##FFFFFF
##307BAB	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#657BAD

Deuteranopia (green-blind)

#5470AA

Tritanopia (blue-blind)

#00878C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #307bab;
/* rgb */ color: rgb(48, 123, 171);
/* oklch */ color: oklch(55.8% 0.104 240.6);

Tailwind

colors: {
  custom: {
    50: '#78a1c4',
    500: '#307bab',
    950: '#000000',
  },
}

SCSS

$custom: #307bab;
$custom-light: #78a1c4;
$custom-dark: #000000;

JSON

{
  "hex": "#307bab",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 171
  },
  "hsl": {
    "h": 203.415,
    "s": 56.164,
    "l": 42.941
  },
  "oklch": {
    "l": 0.5584,
    "c": 0.10436,
    "h": 240.6
  },
  "luminance": 0.17735
}

Semantic roles & 50–950 ramp

primary

#307BAB

secondary

#C39374

accent

#8348DF

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #307BAB

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

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