#4039AC#4039AC

#4039AC is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.8% C 0.177 H 278.6°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#4039AC
RGB	rgb(64, 57, 172)
HSL	hsl(244, 50%, 45%)
HSV	hsv(244, 67%, 67%)
CMYK	cmyk(62.8%, 66.9%, 0%, 32.5%)
CIE-LAB	lab(31.79, 37.82, -60.59)
CIE-LCH	lch(31.79, 71.42, 301.97°)
OKLab	oklab(42.79% 0.0263 -0.1746)
OKLCH	oklch(42.79% 0.177 278.6)
XYZ	xyz(11.0215, 6.9939, 39.7909)
Luminance	0.0699 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4039AC #A5AC39

analogous

#396CAC #4039AC #7939AC

triadic

#4039AC #AC4039 #39AC40

tetradic

#4039AC #AC396C #A5AC39 #39AC79

square

#4039AC #AC396C #A5AC39 #39AC79

split-complementary

#4039AC #AC7939 #6CAC39

monochromatic

#1E1B50 #2F2A7E #4039AC #615AC8 #8D88D8

Accessibility & contrast

On white

8.75

#4039AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#4039AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039AC

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039AC	#FFFFFF	#000000	##FFFFFF
##4039AC	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0046AA

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #4039ac;
/* rgb */ color: rgb(64, 57, 172);
/* oklch */ color: oklch(42.8% 0.177 278.6);

Tailwind

colors: {
  custom: {
    50: '#8170c6',
    500: '#4039ac',
    950: '#000000',
  },
}

SCSS

$custom: #4039ac;
$custom-light: #8170c6;
$custom-dark: #000000;

JSON

{
  "hex": "#4039ac",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 172
  },
  "hsl": {
    "h": 243.652,
    "s": 50.218,
    "l": 44.902
  },
  "oklch": {
    "l": 0.42787,
    "c": 0.1766,
    "h": 278.6
  },
  "luminance": 0.06995
}

Semantic roles & 50–950 ramp

primary

#4039AC

secondary

#BEC27F

accent

#DA4ED1

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4039AC

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

Preview Lab → · Contrast checker → · Palette generator →