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Recognised as Colour

#437DFB

  • #437DFB
  • Blue
  • Dark
  • Nearest: Royal blue

#437DFB is a blue with RGB values 67, 125, 251 and HSL 221°, 96%, 62%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#437DFB#437DFB
HEX#437DFB
RGBrgb(67, 125, 251)
RGB (0–1)0.2627, 0.4902, 0.9843
RGB percentages26.3%, 49%, 98.4%
HSLhsl(221.1, 95.8%, 62.4%)
HSV / HSBhsv(221.1, 73.3%, 98.4%)
CMYK73.3%, 50.2%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,423,163
CSS custom property--colour: #437DFB;

Brightness & contrast

Relative luminance0.22826WCAG 2.x, 0 is black and 1 is white
Perceived brightness133 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#7A7A7A
Inverted#BC8204

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D8CFFno red cones; affects about 1% of men; ΔE 11.2 from the original
Deuteranopia#007BF8no green cones; the most common form, about 1% of men; ΔE 4.9 from the original
Tritanopia#009BB0no blue cones; rare, and affects men and women equally; ΔE 69 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

Royal blue · ΔE 8.2Dodgerblue · ΔE 15Medium slateblue · ΔE 18.2Slate blue · ΔE 19.1Medium purple · ΔE 22.7Cornflower blue · ΔE 24.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 8.24, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBC143
Analogous#43D9FB, #6543FB
Triadic#FB437D, #7DFB43
Split complementary#FB6543, #D9FB43
Tetradic#FB43D9, #FBC143, #43FB65

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9E5FE
Lighter +20%#A7C2FD
Lighter +10%#75A0FC
Darker −10%#115AFA
Darker −20%#0546D3
Darker −30%#0335A2
Darker −40%#022570
More saturated +25%#3F7CFF
Less saturated −25%#5B86E3

Channel breakdown

R67
G125
B251
Red67 (26.3%)
Green125 (49%)
Blue251 (98.4%)
Hue221.09°
Saturation (HSL)95.83%
Lightness62.35%
Dominant channelBlue
Hex per channelR 43 · G 7D · B FB

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Every value on this page was computed from “437dfb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.