Recognised as Colour

#EF2D00

#EF2D00
Red
Dark
Nearest: Orange red

#EF2D00 is a red with RGB values 239, 45, 0 and HSL 11°, 100%, 47%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#EF2D00#EF2D00

HEX#EF2D00

RGBrgb(239, 45, 0)

RGB (0–1)0.9373, 0.1765, 0

RGB percentages93.7%, 17.6%, 0%

HSLhsl(11.3, 100%, 46.9%)

HSV / HSBhsv(11.3, 100%, 93.7%)

CMYK0%, 81.2%, 100%, 6.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,674,624

CSS custom property--colour: #EF2D00;

Brightness & contrast

Relative luminance0.20227WCAG 2.x, 0 is black and 1 is white

Perceived brightness135.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.05:1

Contrast with white4.16:1WCAG normal text: Fail

Contrast with black5.05:1WCAG normal text: AA

Greyscale equivalent#535353

Inverted#10D2FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F6100no red cones; affects about 1% of men; ΔE 76.4 from the original

Deuteranopia#9E8B00no green cones; the most common form, about 1% of men; ΔE 75.2 from the original

Tritanopia#FF0029no blue cones; rare, and affects men and women equally; ΔE 15.9 from the original

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

Contrast with white, large text4.16:1WCAG large text: AA

Contrast with black, large text5.05:1WCAG large text: AAA

Named colours

Orange red · ΔE 7.2 Red · ΔE 10.4 Tomato · ΔE 24.3 Crimson · ΔE 31.6 Firebrick · ΔE 33.2 Coral · ΔE 33.8

Nearest named CSS colourOrange red (#FF4500)ΔE 7.23, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00C2EF

Analogous#EF004B, #EFA400

Triadic#00EF2D, #2D00EF

Split complementary#00EFA4, #004BEF

Tetradic#4BEF00, #00C2EF, #A400EF

Tints, shades & saturation

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

Lighter +40%#FFC9BC

Lighter +30%#FF9F89

Lighter +20%#FF7656

Lighter +10%#FF4C23

Darker −10%#BC2300

Darker −20%#891A00

Darker −30%#561000

Darker −40%#230700

More saturated +25%#EF2D00

Less saturated −25%#D1401E

Channel breakdown

R239

G45

Red239 (93.7%)

Green45 (17.6%)

Blue0 (0%)

Hue11.3°

Saturation (HSL)100%

Lightness46.86%

Dominant channelRed

Hex per channelR EF · G 2D · B 00

Keep nerding

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

#EF2D00

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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