#4039CB#4039CB

#4039CB is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.7% C 0.215 H 275.8°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#4039CB
RGB	rgb(64, 57, 203)
HSL	hsl(243, 58%, 51%)
HSV	hsv(243, 72%, 80%)
CMYK	cmyk(68.5%, 71.9%, 0%, 20.4%)
CIE-LAB	lab(34.65, 47.92, -74.17)
CIE-LCH	lch(34.65, 88.31, 302.87°)
OKLab	oklab(45.71% 0.0217 -0.2144)
OKLCH	oklch(45.71% 0.215 275.8)
XYZ	xyz(14.3534, 8.3267, 57.3391)
Luminance	0.0833 (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

#4039CB #C4CB39

analogous

#397BCB #4039CB #8939CB

triadic

#4039CB #CB4039 #39CB40

tetradic

#4039CB #CB397B #C4CB39 #39CB89

square

#4039CB #CB397B #C4CB39 #39CB89

split-complementary

#4039CB #CB8939 #7BCB39

monochromatic

#201D6D #2F299D #4039CB #6F69D8 #9E9AE4

Accessibility & contrast

On white

7.88

#4039CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#4039CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039CB

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039CB	#FFFFFF	#000000	##FFFFFF
##4039CB	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058CF

Deuteranopia (green-blind)

#004BC8

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4039cb;
/* rgb */ color: rgb(64, 57, 203);
/* oklch */ color: oklch(45.7% 0.215 275.8);

Tailwind

colors: {
  custom: {
    50: '#8871dc',
    500: '#4039cb',
    950: '#000000',
  },
}

SCSS

$custom: #4039cb;
$custom-light: #8871dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4039cb",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 203
  },
  "hsl": {
    "h": 242.877,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.45713,
    "c": 0.21545,
    "h": 275.8
  },
  "luminance": 0.08328
}

Semantic roles & 50–950 ramp

primary

#4039CB

secondary

#CDD090

accent

#E246DA

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4039CB

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

Preview Lab → · Contrast checker → · Palette generator →