#305D8B#305D8B

#305D8B is a mid, moderate cyan. Relative luminance 0.103; OKLCH L 46.8% C 0.090 H 250.8°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#305D8B
RGB	rgb(48, 93, 139)
HSL	hsl(210, 49%, 37%)
HSV	hsv(210, 65%, 55%)
CMYK	cmyk(65.5%, 33.1%, 0%, 45.5%)
CIE-LAB	lab(38.41, -0.14, -30.10)
CIE-LCH	lch(38.41, 30.10, 269.74°)
OKLab	oklab(46.84% -0.0297 -0.0851)
OKLCH	oklch(46.84% 0.09 250.8)
XYZ	xyz(9.7918, 10.3202, 25.8971)
Luminance	0.1032 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305D8B #8B5E30

analogous

#308B8B #305D8B #31308B

triadic

#305D8B #8B305D #5D8B30

tetradic

#305D8B #8B308B #8B5E30 #308B31

square

#305D8B #8B308B #8B5E30 #308B31

split-complementary

#305D8B #8B3130 #8B8B30

monochromatic

#112030 #203F5E #305D8B #407BB8 #6A9ACC

Accessibility & contrast

On white

6.85

#305D8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#305D8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305D8B

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305D8B	#FFFFFF	#000000	##FFFFFF
##305D8B	1.00	6.85	3.06	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495F8D

Deuteranopia (green-blind)

#3D568A

Tritanopia (blue-blind)

#00686D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #305d8b;
/* rgb */ color: rgb(48, 93, 139);
/* oklch */ color: oklch(46.8% 0.090 250.8);

Tailwind

colors: {
  custom: {
    50: '#728aad',
    500: '#305d8b',
    950: '#000000',
  },
}

SCSS

$custom: #305d8b;
$custom-light: #728aad;
$custom-dark: #000000;

JSON

{
  "hex": "#305d8b",
  "rgb": {
    "r": 48,
    "g": 93,
    "b": 139
  },
  "hsl": {
    "h": 210.33,
    "s": 48.663,
    "l": 36.667
  },
  "oklch": {
    "l": 0.46839,
    "c": 0.09015,
    "h": 250.8
  },
  "luminance": 0.10321
}

Semantic roles & 50–950 ramp

primary

#305D8B

secondary

#B38C64

accent

#9550D8

background

#F7F8FA

surface

#EDF0F4

border

#C8CBCE

text

#080B10

muted

#7B7C7F

Preview Lab

Preview with #305D8B

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

Preview Lab → · Contrast checker → · Palette generator →