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Recognised as Colour

#EF455A

  • #EF455A
  • Red
  • Dark
  • Nearest: Crimson

#EF455A is a red with RGB values 239, 69, 90 and HSL 353°, 84%, 60%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#EF455A#EF455A
HEX#EF455A
RGBrgb(239, 69, 90)
RGB (0–1)0.9373, 0.2706, 0.3529
RGB percentages93.7%, 27.1%, 35.3%
HSLhsl(352.6, 84.2%, 60.4%)
HSV / HSBhsv(352.6, 71.1%, 93.7%)
CMYK0%, 71.1%, 62.3%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,680,858
CSS custom property--colour: #EF455A;

Brightness & contrast

Relative luminance0.23345WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.67:1
Contrast with white3.7:1WCAG normal text: Fail
Contrast with black5.67:1WCAG normal text: AA
Greyscale equivalent#6B6B6B
Inverted#10BAA5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#746E5Ano red cones; affects about 1% of men; ΔE 69 from the original
Deuteranopia#9F9255no green cones; the most common form, about 1% of men; ΔE 69.9 from the original
Tritanopia#FF094Eno blue cones; rare, and affects men and women equally; ΔE 16.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.7:1WCAG large text: AA
Contrast with black, large text5.67:1WCAG large text: AAA

Named colours

Crimson · ΔE 12Indian red · ΔE 21.3Firebrick · ΔE 21.7Tomato · ΔE 21.9Salmon · ΔE 23.5Brown · ΔE 24.1
Nearest named CSS colourCrimson (#DC143C)ΔE 11.98, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#45EFDA
Analogous#EF45AF, #EF8545
Triadic#5AEF45, #455AEF
Split complementary#45EF85, #45AFEF
Tetradic#AFEF45, #45EFDA, #8545EF

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FBD2D7
Lighter +20%#F7A3AD
Lighter +10%#F37484
Darker −10%#EB1630
Darker −20%#BE1026
Darker −30%#8F0C1C
Darker −40%#600813
More saturated +25%#FF354E
Less saturated −25%#D65E6D

Channel breakdown

R239
G69
B90
Red239 (93.7%)
Green69 (27.1%)
Blue90 (35.3%)
Hue352.59°
Saturation (HSL)84.16%
Lightness60.39%
Dominant channelRed
Hex per channelR EF · G 45 · B 5A

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Every value on this page was computed from “ef455a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.