#304DA8#304DA8

#304DA8 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.2% C 0.150 H 266.9°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#304DA8
RGB	rgb(48, 77, 168)
HSL	hsl(226, 56%, 42%)
HSV	hsv(226, 71%, 66%)
CMYK	cmyk(71.4%, 54.2%, 0%, 34.1%)
CIE-LAB	lab(35.52, 21.13, -52.17)
CIE-LCH	lch(35.52, 56.28, 292.05°)
OKLab	oklab(45.19% -0.0082 -0.1501)
OKLCH	oklch(45.19% 0.15 266.9)
XYZ	xyz(10.9382, 8.7622, 38.1530)
Luminance	0.0876 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304DA8 #A88B30

analogous

#3089A8 #304DA8 #4F30A8

triadic

#304DA8 #A8304D #4DA830

tetradic

#304DA8 #A83089 #A88B30 #30A84F

square

#304DA8 #A83089 #A88B30 #30A84F

split-complementary

#304DA8 #A84F30 #89A830

monochromatic

#152149 #223778 #304DA8 #4A69CB #7A91D9

Accessibility & contrast

On white

7.63

#304DA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#304DA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304DA8

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304DA8	#FFFFFF	#000000	##FFFFFF
##304DA8	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0859AB

Deuteranopia (green-blind)

#004EA6

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304da8;
/* rgb */ color: rgb(48, 77, 168);
/* oklch */ color: oklch(45.2% 0.150 266.9);

Tailwind

colors: {
  custom: {
    50: '#787ec2',
    500: '#304da8',
    950: '#000000',
  },
}

SCSS

$custom: #304da8;
$custom-light: #787ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#304da8",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 168
  },
  "hsl": {
    "h": 225.5,
    "s": 55.556,
    "l": 42.353
  },
  "oklch": {
    "l": 0.4519,
    "c": 0.15032,
    "h": 266.9
  },
  "luminance": 0.08763
}

Semantic roles & 50–950 ramp

primary

#304DA8

secondary

#C1AE73

accent

#BB49DF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304DA8

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

Preview Lab → · Contrast checker → · Palette generator →