Recognised as Colour

#EF2B01

#EF2B01
Red
Dark
Nearest: Orange red

#EF2B01 is a red with RGB values 239, 43, 1 and HSL 11°, 99%, 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

#EF2B01#EF2B01

HEX#EF2B01

RGBrgb(239, 43, 1)

RGB (0–1)0.9373, 0.1686, 0.0039

RGB percentages93.7%, 16.9%, 0.4%

HSLhsl(10.6, 99.2%, 47.1%)

HSV / HSBhsv(10.6, 99.6%, 93.7%)

CMYK0%, 82%, 99.6%, 6.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,674,113

CSS custom property--colour: #EF2B01;

Brightness & contrast

Relative luminance0.20081WCAG 2.x, 0 is black and 1 is white

Perceived brightness134.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.02:1

Contrast with white4.19:1WCAG normal text: Fail

Contrast with black5.02:1WCAG normal text: AA

Greyscale equivalent#525252

Inverted#10D4FE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6E6000no red cones; affects about 1% of men; ΔE 76.8 from the original

Deuteranopia#9D8B00no green cones; the most common form, about 1% of men; ΔE 76.2 from the original

Tritanopia#FF0028no blue cones; rare, and affects men and women equally; ΔE 15 from the original

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

Contrast with white, large text4.19:1WCAG large text: AA

Contrast with black, large text5.02:1WCAG large text: AAA

Named colours

Orange red · ΔE 7.7 Red · ΔE 10 Tomato · ΔE 24.3 Crimson · ΔE 31.3 Firebrick · ΔE 33.1 Coral · ΔE 34

Nearest named CSS colourOrange red (#FF4500)ΔE 7.7, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#01C5EF

Analogous#EF014E, #EFA201

Triadic#01EF2B, #2B01EF

Split complementary#01EFA2, #014EEF

Tetradic#4EEF01, #01C5EF, #A201EF

Tints, shades & saturation

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

Lighter +40%#FFC9BD

Lighter +30%#FF9F8A

Lighter +20%#FE7558

Lighter +10%#FE4B25

Darker −10%#BC2201

Darker −20%#891901

Darker −30%#571000

Darker −40%#240600

More saturated +25%#F02A00

Less saturated −25%#D13E1F

Channel breakdown

R239

G43

Red239 (93.7%)

Green43 (16.9%)

Blue1 (0.4%)

Hue10.59°

Saturation (HSL)99.17%

Lightness47.06%

Dominant channelRed

Hex per channelR EF · G 2B · B 01

Keep nerding

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

#EF2B01

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

Nerdulate something else