#4038B9#4038B9

#4038B9 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.8% C 0.194 H 277.5°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#4038B9
RGB	rgb(64, 56, 185)
HSL	hsl(244, 54%, 47%)
HSV	hsv(244, 70%, 73%)
CMYK	cmyk(65.4%, 69.7%, 0%, 27.5%)
CIE-LAB	lab(32.74, 42.68, -66.76)
CIE-LCH	lch(32.74, 79.24, 302.59°)
OKLab	oklab(43.83% 0.0253 -0.1927)
OKLCH	oklch(43.83% 0.194 277.5)
XYZ	xyz(12.2826, 7.4201, 46.6745)
Luminance	0.0742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.18

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4038B9 #B1B938

analogous

#3871B9 #4038B9 #8138B9

triadic

#4038B9 #B94038 #38B940

tetradic

#4038B9 #B93871 #B1B938 #38B981

square

#4038B9 #B93871 #B1B938 #38B981

split-complementary

#4038B9 #B98138 #71B938

monochromatic

#1F1C5B #302A8A #4038B9 #665FCF #938EDD

Accessibility & contrast

On white

8.45

#4038B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#4038B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4038B9

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4038B9	#FFFFFF	#000000	##FFFFFF
##4038B9	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BD

Deuteranopia (green-blind)

#0048B7

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4038b9;
/* rgb */ color: rgb(64, 56, 185);
/* oklch */ color: oklch(43.8% 0.194 277.5);

Tailwind

colors: {
  custom: {
    50: '#8470cf',
    500: '#4038b9',
    950: '#000000',
  },
}

SCSS

$custom: #4038b9;
$custom-light: #8470cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4038b9",
  "rgb": {
    "r": 64,
    "g": 56,
    "b": 185
  },
  "hsl": {
    "h": 243.721,
    "s": 53.527,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43832,
    "c": 0.19435,
    "h": 277.5
  },
  "luminance": 0.07421
}

Semantic roles & 50–950 ramp

primary

#4038B9

secondary

#C3C885

accent

#DD4BD4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #4038B9

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

Preview Lab → · Contrast checker → · Palette generator →