#3040B4#3040B4

#3040B4 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.183 H 270.6°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#3040B4
RGB	rgb(48, 64, 180)
HSL	hsl(233, 58%, 45%)
HSV	hsv(233, 73%, 71%)
CMYK	cmyk(73.3%, 64.4%, 0%, 29.4%)
CIE-LAB	lab(33.11, 34.08, -63.23)
CIE-LCH	lch(33.11, 71.83, 298.32°)
OKLab	oklab(43.7% 0.0018 -0.1828)
OKLCH	oklch(43.7% 0.183 270.6)
XYZ	xyz(11.2877, 7.5893, 44.0412)
Luminance	0.0759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3040B4 #B4A430

analogous

#3082B4 #3040B4 #6230B4

triadic

#3040B4 #B43040 #40B430

tetradic

#3040B4 #B43082 #B4A430 #30B462

square

#3040B4 #B43082 #B4A430 #30B462

split-complementary

#3040B4 #B46230 #82B430

monochromatic

#161E53 #232F84 #3040B4 #5160D1 #818CDD

Accessibility & contrast

On white

8.34

#3040B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3040B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3040B4

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3040B4	#FFFFFF	#000000	##FFFFFF
##3040B4	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#0048B2

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3040b4;
/* rgb */ color: rgb(48, 64, 180);
/* oklch */ color: oklch(43.7% 0.183 270.6);

Tailwind

colors: {
  custom: {
    50: '#7c75cb',
    500: '#3040b4',
    950: '#000000',
  },
}

SCSS

$custom: #3040b4;
$custom-light: #7c75cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3040b4",
  "rgb": {
    "r": 48,
    "g": 64,
    "b": 180
  },
  "hsl": {
    "h": 232.727,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43696,
    "c": 0.18277,
    "h": 270.6
  },
  "luminance": 0.0759
}

Semantic roles & 50–950 ramp

primary

#3040B4

secondary

#C6BD79

accent

#CE47E1

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3040B4

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

Preview Lab → · Contrast checker → · Palette generator →