#4051CF#4051CF

#4051CF is a mid, vivid blue. Relative luminance 0.115; OKLCH L 50.0% C 0.194 H 271.5°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#4051CF
RGB	rgb(64, 81, 207)
HSL	hsl(233, 60%, 53%)
HSV	hsv(233, 69%, 81%)
CMYK	cmyk(69.1%, 60.9%, 0%, 18.8%)
CIE-LAB	lab(40.37, 34.89, -67.11)
CIE-LCH	lch(40.37, 75.64, 297.47°)
OKLab	oklab(49.98% 0.0052 -0.1936)
OKLCH	oklch(49.98% 0.194 271.5)
XYZ	xyz(16.3155, 11.4783, 60.3751)
Luminance	0.1148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4051CF #CFBE40

analogous

#4098CF #4051CF #7640CF

triadic

#4051CF #CF4051 #51CF40

tetradic

#4051CF #CF4098 #CFBE40 #40CF76

square

#4051CF #CF4098 #CFBE40 #40CF76

split-complementary

#4051CF #CF7640 #98CF40

monochromatic

#1E2877 #2A39A8 #4051CF #717EDB #A2AAE8

Accessibility & contrast

On white

6.37

#4051CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#4051CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4051CF

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4051CF	#FFFFFF	#000000	##FFFFFF
##4051CF	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D3

Deuteranopia (green-blind)

#0059CD

Tritanopia (blue-blind)

#007188

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #4051cf;
/* rgb */ color: rgb(64, 81, 207);
/* oklch */ color: oklch(50.0% 0.194 271.5);

Tailwind

colors: {
  custom: {
    50: '#8781df',
    500: '#4051cf',
    950: '#000000',
  },
}

SCSS

$custom: #4051cf;
$custom-light: #8781df;
$custom-dark: #000000;

JSON

{
  "hex": "#4051cf",
  "rgb": {
    "r": 64,
    "g": 81,
    "b": 207
  },
  "hsl": {
    "h": 232.867,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.49976,
    "c": 0.19369,
    "h": 271.5
  },
  "luminance": 0.1148
}

Semantic roles & 50–950 ramp

primary

#4051CF

secondary

#D4CD97

accent

#D045E3

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4051CF

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

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