#30579B#30579B

#30579B is a mid, moderate blue. Relative luminance 0.098; OKLCH L 46.4% C 0.119 H 260.7°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#30579B
RGB	rgb(48, 87, 155)
HSL	hsl(218, 53%, 40%)
HSV	hsv(218, 69%, 61%)
CMYK	cmyk(69%, 43.9%, 0%, 39.2%)
CIE-LAB	lab(37.50, 9.63, -41.20)
CIE-LCH	lch(37.50, 42.31, 283.15°)
OKLab	oklab(46.42% -0.0193 -0.1177)
OKLCH	oklch(46.42% 0.119 260.7)
XYZ	xyz(10.5414, 9.8103, 32.3420)
Luminance	0.0981 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#30579B #9B7430

analogous

#308C9B #30579B #3F309B

triadic

#30579B #9B3057 #579B30

tetradic

#30579B #9B308C #9B7430 #309B3F

square

#30579B #9B308C #9B7430 #309B3F

split-complementary

#30579B #9B3F30 #8C9B30

monochromatic

#13233E #223D6C #30579B #4373C5 #7296D3

Accessibility & contrast

On white

7.09

#30579B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#30579B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #30579B

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##30579B	#FFFFFF	#000000	##FFFFFF
##30579B	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375E9E

Deuteranopia (green-blind)

#25549A

Tritanopia (blue-blind)

#006771

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #30579b;
/* rgb */ color: rgb(48, 87, 155);
/* oklch */ color: oklch(46.4% 0.119 260.7);

Tailwind

colors: {
  custom: {
    50: '#7585b9',
    500: '#30579b',
    950: '#000000',
  },
}

SCSS

$custom: #30579b;
$custom-light: #7585b9;
$custom-dark: #000000;

JSON

{
  "hex": "#30579b",
  "rgb": {
    "r": 48,
    "g": 87,
    "b": 155
  },
  "hsl": {
    "h": 218.131,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.46422,
    "c": 0.11926,
    "h": 260.7
  },
  "luminance": 0.09811
}

Semantic roles & 50–950 ramp

primary

#30579B

secondary

#BB9E6C

accent

#A74CDC

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B11

muted

#7B7C80

Preview Lab

Preview with #30579B

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

Preview Lab → · Contrast checker → · Palette generator →