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Recognised as Colour

#01437A

  • #01437A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#01437A is a blue with RGB values 1, 67, 122 and HSL 207°, 98%, 24%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#01437A#01437A
HEX#01437A
RGBrgb(1, 67, 122)
RGB (0–1)0.0039, 0.2627, 0.4784
RGB percentages0.4%, 26.3%, 47.8%
HSLhsl(207.3, 98.4%, 24.1%)
HSV / HSBhsv(207.3, 99.2%, 47.8%)
CMYK99.2%, 45.1%, 0%, 52.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer82,810
CSS custom property--colour: #01437A;

Brightness & contrast

Relative luminance0.05426WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.07:1
Contrast with white10.07:1WCAG normal text: AAA
Contrast with black2.09:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#FEBC85

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#26477Cno red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#0D3D79no green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#005058no blue cones; rare, and affects men and women equally; ΔE 34.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.07:1WCAG large text: AAA
Contrast with black, large text2.09:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.5Steel blue · ΔE 26.3Midnight blue · ΔE 32.6Slate grey · ΔE 36.5Dark slate grey · ΔE 36.6Cornflower blue · ΔE 36.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.51, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7A3801
Analogous#017A74, #01077A
Triadic#7A0143, #437A01
Split complementary#7A0107, #7A7401
Tetradic#74017A, #7A3801, #077A01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#49ACFE
Lighter +30%#1794FD
Lighter +20%#027BDF
Lighter +10%#015FAD
Darker −10%#012747
Darker −20%#000B15
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00437B
Less saturated −25%#10426B

Channel breakdown

R1
G67
B122
Red1 (0.4%)
Green67 (26.3%)
Blue122 (47.8%)
Hue207.27°
Saturation (HSL)98.37%
Lightness24.12%
Dominant channelBlue
Hex per channelR 01 · G 43 · B 7A

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Every value on this page was computed from “01437a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.