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Recognised as Colour

#121FFB

  • #121FFB
  • Blue
  • Dark
  • Nearest: Blue

#121FFB is a blue with RGB values 18, 31, 251 and HSL 237°, 97%, 53%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Blue.

Colour values

#121FFB#121FFB
HEX#121FFB
RGBrgb(18, 31, 251)
RGB (0–1)0.0706, 0.1216, 0.9843
RGB percentages7.1%, 12.2%, 98.4%
HSLhsl(236.7, 96.7%, 52.7%)
HSV / HSBhsv(236.7, 92.8%, 98.4%)
CMYK92.8%, 87.6%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,187,835
CSS custom property--colour: #121FFB;

Brightness & contrast

Relative luminance0.08074WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.03:1
Contrast with white8.03:1WCAG normal text: AAA
Contrast with black2.61:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#EDE004

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005CFFno red cones; affects about 1% of men; ΔE 36.4 from the original
Deuteranopia#0043F8no green cones; the most common form, about 1% of men; ΔE 21.1 from the original
Tritanopia#006E95no blue cones; rare, and affects men and women equally; ΔE 111.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.03:1WCAG large text: AAA
Contrast with black, large text2.61:1WCAG large text: Fail

Named colours

Blue · ΔE 9.3Medium blue · ΔE 15.1Blue violet · ΔE 29Dark violet · ΔE 32.9Dark orchid · ΔE 43.9Dark blue · ΔE 44.5
Nearest named CSS colourBlue (#0000FF)ΔE 9.27, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBEE12
Analogous#1294FB, #7912FB
Triadic#FB121F, #1FFB12
Split complementary#FB7912, #94FB12
Tetradic#FB1294, #FBEE12, #12FB79

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DBDDFE
Lighter +30%#A8ADFE
Lighter +20%#767EFD
Lighter +10%#444EFC
Darker −10%#040FD6
Darker −20%#030CA4
Darker −30%#020872
Darker −40%#010540
More saturated +25%#0E1BFF
Less saturated −25%#303ADD

Channel breakdown

R18
G31
B251
Red18 (7.1%)
Green31 (12.2%)
Blue251 (98.4%)
Hue236.65°
Saturation (HSL)96.68%
Lightness52.75%
Dominant channelBlue
Hex per channelR 12 · G 1F · B FB

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Every value on this page was computed from “121ffb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.