#30539B#30539B

#30539B is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.5% C 0.124 H 262.9°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#30539B
RGB	rgb(48, 83, 155)
HSL	hsl(220, 53%, 40%)
HSV	hsv(220, 69%, 61%)
CMYK	cmyk(69%, 46.5%, 0%, 39.2%)
CIE-LAB	lab(36.33, 12.25, -43.08)
CIE-LCH	lch(36.33, 44.79, 285.88°)
OKLab	oklab(45.52% -0.0153 -0.1233)
OKLCH	oklch(45.52% 0.124 262.9)
XYZ	xyz(10.2265, 9.1804, 32.2370)
Luminance	0.0918 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#30539B #9B7830

analogous

#30889B #30539B #43309B

triadic

#30539B #9B3053 #539B30

tetradic

#30539B #9B3088 #9B7830 #309B43

square

#30539B #9B3088 #9B7830 #309B43

split-complementary

#30539B #9B4330 #889B30

monochromatic

#13213E #223A6C #30539B #436EC5 #7292D3

Accessibility & contrast

On white

7.40

#30539B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#30539B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #30539B

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##30539B	#FFFFFF	#000000	##FFFFFF
##30539B	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5B9E

Deuteranopia (green-blind)

#1A519A

Tritanopia (blue-blind)

#00646F

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #30539b;
/* rgb */ color: rgb(48, 83, 155);
/* oklch */ color: oklch(45.5% 0.124 262.9);

Tailwind

colors: {
  custom: {
    50: '#7582b9',
    500: '#30539b',
    950: '#000000',
  },
}

SCSS

$custom: #30539b;
$custom-light: #7582b9;
$custom-dark: #000000;

JSON

{
  "hex": "#30539b",
  "rgb": {
    "r": 48,
    "g": 83,
    "b": 155
  },
  "hsl": {
    "h": 220.374,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.45521,
    "c": 0.12421,
    "h": 262.9
  },
  "luminance": 0.09181
}

Semantic roles & 50–950 ramp

primary

#30539B

secondary

#BBA16C

accent

#AD4CDC

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #30539B

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

Preview Lab → · Contrast checker → · Palette generator →