Recognised as Colour

#D21800

#D21800
Red
Dark
Nearest: Orange red

#D21800 is a red with RGB values 210, 24, 0 and HSL 7°, 100%, 41%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#D21800#D21800

HEX#D21800

RGBrgb(210, 24, 0)

RGB (0–1)0.8235, 0.0941, 0

RGB percentages82.4%, 9.4%, 0%

HSLhsl(6.9, 100%, 41.2%)

HSV / HSBhsv(6.9, 100%, 82.4%)

CMYK0%, 88.6%, 100%, 17.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,768,704

CSS custom property--colour: #D21800;

Brightness & contrast

Relative luminance0.14355WCAG 2.x, 0 is black and 1 is white

Perceived brightness116.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.42:1

Contrast with white5.42:1WCAG normal text: AA

Contrast with black3.87:1WCAG normal text: Fail

Greyscale equivalent#3E3E3E

Inverted#2DE7FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5C5000no red cones; affects about 1% of men; ΔE 72.3 from the original

Deuteranopia#887800no green cones; the most common form, about 1% of men; ΔE 71.5 from the original

Tritanopia#E80018no blue cones; rare, and affects men and women equally; ΔE 9.7 from the original

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

Contrast with white, large text5.42:1WCAG large text: AAA

Contrast with black, large text3.87:1WCAG large text: AA

Named colours

Orange red · ΔE 16.7 Red · ΔE 18.3 Tomato · ΔE 22.9 Firebrick · ΔE 23.9 Crimson · ΔE 25.3 Dark red · ΔE 28.4

Nearest named CSS colourOrange red (#FF4500)ΔE 16.68, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00BAD2

Analogous#D20051, #D28100

Triadic#00D218, #1800D2

Split complementary#00D281, #0051D2

Tetradic#51D200, #00BAD2, #8100D2

Tints, shades & saturation

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

Lighter +40%#FFAA9F

Lighter +30%#FF7D6C

Lighter +20%#FF5039

Lighter +10%#FF2206

Darker −10%#9F1200

Darker −20%#6C0C00

Darker −30%#390700

Darker −40%#060100

More saturated +25%#D21800

Less saturated −25%#B82C1A

Channel breakdown

R210

G24

Red210 (82.4%)

Green24 (9.4%)

Blue0 (0%)

Hue6.86°

Saturation (HSL)100%

Lightness41.18%

Dominant channelRed

Hex per channelR D2 · G 18 · B 00

Keep nerding

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

#D21800

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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