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Colors
#EF0400

#EF0400

Every representation of #EF0400, its WCAG contrast behavior, and related colors worth exploring. Click any value to copy it.

AaAa

Relative luminance: 0.1844
Brightness: 74 / 255
Reads as: A dark color — pair it with light text.

Color formats

HEX: #ef0400
RGB: rgb(239, 4, 0)
RGBA: rgba(239, 4, 0, 1)
CMYK: cmyk(0%, 98%, 100%, 6%)
HSV: hsv(1°, 100%, 94%)
HSL: hsl(1, 100%, 47%)
LAB: lab(50.03% 75.96 64.02)
XYZ: xyz(35.64, 18.44, 1.68)

Accessibility

WCAG 2 contrast for #EF0400 as a text color on the two most common surfaces.

On white

AA Large

The quick brown fox jumps over the lazy dog.

Contrast ratio: 4.48:1

AA normal textFail
AA large textPass
AAA normal textFail
AAA large textFail
UI componentsPass

On black

AA

The quick brown fox jumps over the lazy dog.

Contrast ratio: 4.69:1

AA normal textPass
AA large textPass
AAA normal textFail
AAA large textPass
UI componentsPass

Related colors

Shades (darker)

#c70300 #9f0300 #770200 #500100 #280100

Tints (lighter)

#ff211d #ff4d4a #ff7a78 #ffa6a5 #ffd3d2

Harmonies (complementary, analogous, triadic)

#00ebef #ef0074 #ef7b00 #00ef04 #0400ef

#EF0400 Color | ColorForge