#305DAB#305DAB

#305DAB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 48.9% C 0.135 H 260.6°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#305DAB
RGB	rgb(48, 93, 171)
HSL	hsl(218, 56%, 43%)
HSV	hsv(218, 72%, 67%)
CMYK	cmyk(71.9%, 45.6%, 0%, 32.9%)
CIE-LAB	lab(40.24, 11.73, -46.35)
CIE-LCH	lch(40.24, 47.81, 284.20°)
OKLab	oklab(48.86% -0.022 -0.1327)
OKLCH	oklch(48.86% 0.135 260.6)
XYZ	xyz(12.4813, 11.3960, 40.0620)
Luminance	0.1140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305DAB #AB7E30

analogous

#309AAB #305DAB #4130AB

triadic

#305DAB #AB305D #5DAB30

tetradic

#305DAB #AB309A #AB7E30 #30AB41

square

#305DAB #AB309A #AB7E30 #30AB41

split-complementary

#305DAB #AB4130 #9AAB30

monochromatic

#15294B #23437B #305DAB #4C7BCD #7B9EDA

Accessibility & contrast

On white

6.40

#305DAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#305DAB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305DAB

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305DAB	#FFFFFF	#000000	##FFFFFF
##305DAB	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3665AE

Deuteranopia (green-blind)

#1D5AA9

Tritanopia (blue-blind)

#006F7B

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #305dab;
/* rgb */ color: rgb(48, 93, 171);
/* oklch */ color: oklch(48.9% 0.135 260.6);

Tailwind

colors: {
  custom: {
    50: '#788ac4',
    500: '#305dab',
    950: '#000000',
  },
}

SCSS

$custom: #305dab;
$custom-light: #788ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#305dab",
  "rgb": {
    "r": 48,
    "g": 93,
    "b": 171
  },
  "hsl": {
    "h": 218.049,
    "s": 56.164,
    "l": 42.941
  },
  "oklch": {
    "l": 0.48855,
    "c": 0.13452,
    "h": 260.6
  },
  "luminance": 0.11397
}

Semantic roles & 50–950 ramp

primary

#305DAB

secondary

#C3A674

accent

#A848DF

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305DAB

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

Preview Lab → · Contrast checker → · Palette generator →