#304EBF#304EBF

#304EBF is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.3% C 0.181 H 267.5°. Best body text is #FFFFFF at 7.08:1 contrast (WCAG AA passes).

Color values

HEX	#304EBF
RGB	rgb(48, 78, 191)
HSL	hsl(227, 60%, 47%)
HSV	hsv(227, 75%, 75%)
CMYK	cmyk(74.9%, 59.2%, 0%, 25.1%)
CIE-LAB	lab(37.55, 29.05, -62.46)
CIE-LCH	lch(37.55, 68.89, 294.95°)
OKLab	oklab(47.26% -0.0078 -0.1803)
OKLCH	oklch(47.26% 0.181 267.5)
XYZ	xyz(13.3440, 9.8373, 50.4756)
Luminance	0.0984 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EBF #BFA130

analogous

#3096BF #304EBF #5A30BF

triadic

#304EBF #BF304E #4EBF30

tetradic

#304EBF #BF3096 #BFA130 #30BF5A

square

#304EBF #BF3096 #BFA130 #30BF5A

split-complementary

#304EBF #BF5A30 #96BF30

monochromatic

#17265D #243A8E #304EBF #5772D5 #889BE1

Accessibility & contrast

On white

7.08

#304EBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#304EBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EBF

7.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EBF	#FFFFFF	#000000	##FFFFFF
##304EBF	1.00	7.08	2.97	7.08
#FFFFFF	7.08	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC3

Deuteranopia (green-blind)

#0052BD

Tritanopia (blue-blind)

#006A7F

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #304ebf;
/* rgb */ color: rgb(48, 78, 191);
/* oklch */ color: oklch(47.3% 0.181 267.5);

Tailwind

colors: {
  custom: {
    50: '#7d7fd3',
    500: '#304ebf',
    950: '#000000',
  },
}

SCSS

$custom: #304ebf;
$custom-light: #7d7fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#304ebf",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 191
  },
  "hsl": {
    "h": 227.413,
    "s": 59.833,
    "l": 46.863
  },
  "oklch": {
    "l": 0.47264,
    "c": 0.18052,
    "h": 267.5
  },
  "luminance": 0.09839
}

Semantic roles & 50–950 ramp

primary

#304EBF

secondary

#CBBB80

accent

#C245E3

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #304EBF

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

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