Recognised as Colour

#E75100

#E75100
Orange
Dark
Nearest: Orange red

#E75100 is a orange with RGB values 231, 81, 0 and HSL 21°, 100%, 45%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#E75100#E75100

HEX#E75100

RGBrgb(231, 81, 0)

RGB (0–1)0.9059, 0.3176, 0

RGB percentages90.6%, 31.8%, 0%

HSLhsl(21, 100%, 45.3%)

HSV / HSBhsv(21, 100%, 90.6%)

CMYK0%, 64.9%, 100%, 9.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,159,552

CSS custom property--colour: #E75100;

Brightness & contrast

Relative luminance0.22874WCAG 2.x, 0 is black and 1 is white

Perceived brightness140.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.57:1

Contrast with white3.77:1WCAG normal text: Fail

Contrast with black5.57:1WCAG normal text: AA

Greyscale equivalent#6B6B6B

Inverted#18AEFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7E6E00no red cones; affects about 1% of men; ΔE 61.4 from the original

Deuteranopia#A39000no green cones; the most common form, about 1% of men; ΔE 61.2 from the original

Tritanopia#FF1F46no blue cones; rare, and affects men and women equally; ΔE 35.2 from the original

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

Contrast with white, large text3.77:1WCAG large text: AA

Contrast with black, large text5.57:1WCAG large text: AAA

Named colours

Orange red · ΔE 13 Tomato · ΔE 20.3 Chocolate · ΔE 20.5 Coral · ΔE 24 Red · ΔE 24.6 Dark orange · ΔE 25.9

Nearest named CSS colourOrange red (#FF4500)ΔE 12.97, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0096E7

Analogous#E70023, #E7C400

Triadic#00E751, #5100E7

Split complementary#00E7C4, #0023E7

Tetradic#23E700, #0096E7, #C400E7

Tints, shades & saturation

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

Lighter +40%#FFCEB4

Lighter +30%#FFAD81

Lighter +20%#FF8C4E

Lighter +10%#FF6B1B

Darker −10%#B43F00

Darker −20%#812D00

Darker −30%#4E1B00

Darker −40%#1B0900

More saturated +25%#E75100

Less saturated −25%#CA5A1D

Channel breakdown

R231

G81

Red231 (90.6%)

Green81 (31.8%)

Blue0 (0%)

Hue21.04°

Saturation (HSL)100%

Lightness45.29%

Dominant channelRed

Hex per channelR E7 · G 51 · B 00

Keep nerding

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

#E75100

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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