Colour

#EF003C

#EF003C
Red
Dark
Nearest: Crimson

#EF003C is a red with RGB values 239, 0, 60 and HSL 345°, 100%, 47%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#EF003C#EF003C

HEX#EF003C

RGBrgb(239, 0, 60)

RGB (0–1)0.9373, 0, 0.2353

RGB percentages93.7%, 0%, 23.5%

HSLhsl(344.9, 100%, 46.9%)

HSV / HSBhsv(344.9, 100%, 93.7%)

CMYK0%, 100%, 74.9%, 6.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,663,164

CSS custom property--colour: #EF003C;

Brightness & contrast

Relative luminance0.18677WCAG 2.x, 0 is black and 1 is white

Perceived brightness132.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.74:1

Contrast with white4.43:1WCAG normal text: Fail

Contrast with black4.74:1WCAG normal text: AA

Greyscale equivalent#373737

Inverted#10FFC3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#625A3Bno red cones; affects about 1% of men; ΔE 82.4 from the original

Deuteranopia#968733no green cones; the most common form, about 1% of men; ΔE 82.5 from the original

Tritanopia#FF0024no blue cones; rare, and affects men and women equally; ΔE 17.5 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text4.43:1WCAG large text: AA

Contrast with black, large text4.74:1WCAG large text: AAA

Named colours

Crimson · ΔE 8.6 Firebrick · ΔE 24.2 Tomato · ΔE 24.2 Red · ΔE 29.1 Brown · ΔE 31.4 Orange red · ΔE 32.8

Nearest named CSS colourCrimson (#DC143C)ΔE 8.63, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#00EFB3

Analogous#EF00B3, #EF3B00

Triadic#3CEF00, #003CEF

Split complementary#00EF3B, #00B3EF

Tetradic#B4EF00, #00EFB3, #3B00EF

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFBCCD

Lighter +30%#FF89A7

Lighter +20%#FF5680

Lighter +10%#FF235A

Darker −10%#BC002F

Darker −20%#890022

Darker −30%#560016

Darker −40%#230009

More saturated +25%#EF003C

Less saturated −25%#D11E4B

Channel breakdown

R239

B60

Red239 (93.7%)

Green0 (0%)

Blue60 (23.5%)

Hue344.94°

Saturation (HSL)100%

Lightness46.86%

Dominant channelRed

Hex per channelR EF · G 00 · B 3C

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#EF003C

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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