#4038BC#4038BC

#4038BC is a dark, vivid blue. Relative luminance 0.075; OKLCH L 44.1% C 0.198 H 277.2°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#4038BC
RGB	rgb(64, 56, 188)
HSL	hsl(244, 54%, 48%)
HSV	hsv(244, 70%, 74%)
CMYK	cmyk(66%, 70.2%, 0%, 26.3%)
CIE-LAB	lab(33.02, 43.66, -68.07)
CIE-LCH	lch(33.02, 80.87, 302.67°)
OKLab	oklab(44.12% 0.0248 -0.1965)
OKLCH	oklch(44.12% 0.198 277.2)
XYZ	xyz(12.6027, 7.5481, 48.3600)
Luminance	0.0755 (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

#4038BC #B4BC38

analogous

#3872BC #4038BC #8238BC

triadic

#4038BC #BC4038 #38BC40

tetradic

#4038BC #BC3872 #B4BC38 #38BC82

square

#4038BC #BC3872 #B4BC38 #38BC82

split-complementary

#4038BC #BC8238 #72BC38

monochromatic

#201C5E #302A8D #4038BC #6861D0 #9590DE

Accessibility & contrast

On white

8.37

#4038BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#4038BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4038BC

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4038BC	#FFFFFF	#000000	##FFFFFF
##4038BC	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C0

Deuteranopia (green-blind)

#0048BA

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4038bc;
/* rgb */ color: rgb(64, 56, 188);
/* oklch */ color: oklch(44.1% 0.198 277.2);

Tailwind

colors: {
  custom: {
    50: '#8570d1',
    500: '#4038bc',
    950: '#000000',
  },
}

SCSS

$custom: #4038bc;
$custom-light: #8570d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4038bc",
  "rgb": {
    "r": 64,
    "g": 56,
    "b": 188
  },
  "hsl": {
    "h": 243.636,
    "s": 54.098,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44117,
    "c": 0.19809,
    "h": 277.2
  },
  "luminance": 0.07549
}

Semantic roles & 50–950 ramp

primary

#4038BC

secondary

#C5C987

accent

#DD4AD5

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #4038BC

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

Preview Lab → · Contrast checker → · Palette generator →