#0040FF#0040FF

#0040FF is a mid, highly saturated blue. Relative luminance 0.109; OKLCH L 50.1% C 0.280 H 263.8°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#0040FF
RGB	rgb(0, 64, 255)
HSL	hsl(225, 100%, 50%)
HSV	hsv(225, 100%, 100%)
CMYK	cmyk(100%, 74.9%, 0%, 0%)
CIE-LAB	lab(39.38, 58.06, -96.05)
CIE-LCH	lch(39.38, 112.23, 301.15°)
OKLab	oklab(50.11% -0.0302 -0.2787)
OKLCH	oklch(50.11% 0.28 263.8)
XYZ	xyz(19.8770, 10.8840, 95.6415)
Luminance	0.1089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0040FF #FFBF00

analogous

#00C0FF #0040FF #3F00FF

triadic

#0040FF #FF0040 #40FF00

tetradic

#0040FF #FF00C0 #FFBF00 #00FF3F

square

#0040FF #FF00C0 #FFBF00 #00FF3F

split-complementary

#0040FF #FF3F00 #C0FF00

monochromatic

#002185 #0031C2 #0040FF #3D6EFF #7A9CFF

Accessibility & contrast

On white

6.61

#0040FF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#0040FF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #0040FF

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0040FF	#FFFFFF	#000000	##FFFFFF
##0040FF	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068FF

Deuteranopia (green-blind)

#0051FC

Tritanopia (blue-blind)

#007A9D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #0040ff;
/* rgb */ color: rgb(0, 64, 255);
/* oklch */ color: oklch(50.1% 0.280 263.8);

Tailwind

colors: {
  custom: {
    50: '#8676ff',
    500: '#0040ff',
    950: '#000000',
  },
}

SCSS

$custom: #0040ff;
$custom-light: #8676ff;
$custom-dark: #000000;

JSON

{
  "hex": "#0040ff",
  "rgb": {
    "r": 0,
    "g": 64,
    "b": 255
  },
  "hsl": {
    "h": 224.941,
    "s": 100,
    "l": 50
  },
  "oklch": {
    "l": 0.50109,
    "c": 0.28035,
    "h": 263.8
  },
  "luminance": 0.10887
}

Semantic roles & 50–950 ramp

primary

#0040FF

secondary

#E7CA74

accent

#C929FF

background

#F9F7FF

surface

#F2EDFF

border

#CCC8D7

text

#0E0918

muted

#7E7B86

Preview Lab

Preview with #0040FF

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

Preview Lab → · Contrast checker → · Palette generator →