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Colour

#01045A

  • #01045A
  • Blue
  • Dark
  • Nearest: Midnight blue

#01045A is a blue with RGB values 1, 4, 90 and HSL 238°, 98%, 18%. It is a dark colour, so white text on it reaches 18:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#01045A#01045A
HEX#01045A
RGBrgb(1, 4, 90)
RGB (0–1)0.0039, 0.0157, 0.3529
RGB percentages0.4%, 1.6%, 35.3%
HSLhsl(238, 97.8%, 17.8%)
HSV / HSBhsv(238, 98.9%, 35.3%)
CMYK98.9%, 95.6%, 0%, 64.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer66,650
CSS custom property--colour: #01045A;

Brightness & contrast

Relative luminance0.00831WCAG 2.x, 0 is black and 1 is white
Perceived brightness30.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.01:1
Contrast with white18.01:1WCAG normal text: AAA
Contrast with black1.17:1WCAG normal text: Fail
Greyscale equivalent#0A0A0A
Inverted#FEFBA5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001B5Cno red cones; affects about 1% of men; ΔE 17 from the original
Deuteranopia#001159no green cones; the most common form, about 1% of men; ΔE 9.8 from the original
Tritanopia#002232no blue cones; rare, and affects men and women equally; ΔE 52.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.01:1WCAG large text: AAA
Contrast with black, large text1.17:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.8Navy · ΔE 21.3Indigo · ΔE 22.1Dark slateblue · ΔE 25.7Dark blue · ΔE 26.5Rebecca purple · ΔE 26.8
Nearest named CSS colourMidnight blue (#191970)ΔE 8.79, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A5701
Analogous#01305A, #2B015A
Triadic#5A0104, #045A01
Split complementary#5A2B01, #315A01
Tetradic#5A0130, #5A5701, #015A2B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2A31FD
Lighter +30%#030BF1
Lighter +20%#0208BF
Lighter +10%#02068C
Darker −10%#000228
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00035B
Less saturated −25%#0C0F4F

Channel breakdown

R1
G4
B90
Red1 (0.4%)
Green4 (1.6%)
Blue90 (35.3%)
Hue237.98°
Saturation (HSL)97.8%
Lightness17.84%
Dominant channelBlue
Hex per channelR 01 · G 04 · B 5A

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Every value on this page was computed from “01045a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.