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Recognised as Colour

#030138

  • #030138
  • Blue
  • Dark
  • Nearest: Midnight blue

#030138 is a blue with RGB values 3, 1, 56 and HSL 242°, 96%, 11%. It is a dark colour, so white text on it reaches 19.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#030138#030138
HEX#030138
RGBrgb(3, 1, 56)
RGB (0–1)0.0118, 0.0039, 0.2196
RGB percentages1.2%, 0.4%, 22%
HSLhsl(242.2, 96.5%, 11.2%)
HSV / HSBhsv(242.2, 98.2%, 22%)
CMYK94.6%, 98.2%, 0%, 78%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer196,920
CSS custom property--colour: #030138;

Brightness & contrast

Relative luminance0.00327WCAG 2.x, 0 is black and 1 is white
Perceived brightness19 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.71:1
Contrast with white19.71:1WCAG normal text: AAA
Contrast with black1.07:1WCAG normal text: Fail
Greyscale equivalent#050505
Inverted#FCFEC7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000E39no red cones; affects about 1% of men; ΔE 7 from the original
Deuteranopia#000837no green cones; the most common form, about 1% of men; ΔE 5 from the original
Tritanopia#00121Dno blue cones; rare, and affects men and women equally; ΔE 31.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.71:1WCAG large text: AAA
Contrast with black, large text1.07:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 25.2Dark slateblue · ΔE 30.4Black · ΔE 37.5Rebecca purple · ΔE 41.3Indigo · ΔE 42.9Navy · ΔE 44.5
Nearest named CSS colourMidnight blue (#191970)ΔE 25.17, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#363801
Analogous#011B38, #1E0138
Triadic#380301, #013803
Split complementary#381E01, #1B3801
Tetradic#38011B, #363801, #01381E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#130AFB
Lighter +30%#0B04CE
Lighter +20%#08039C
Lighter +10%#06026A
Darker −10%#000006
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#020039
Less saturated −25%#0A0831

Channel breakdown

R3
G1
B56
Red3 (1.2%)
Green1 (0.4%)
Blue56 (22%)
Hue242.18°
Saturation (HSL)96.49%
Lightness11.18%
Dominant channelBlue
Hex per channelR 03 · G 01 · B 38

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Every value on this page was computed from “hex 030138” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.