Nerdulator> put something in

Recognised as Colour

#04507B

  • #04507B
  • Blue
  • Dark
  • Nearest: Steel blue

#04507B is a blue with RGB values 4, 80, 123 and HSL 202°, 94%, 25%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#04507B#04507B
HEX#04507B
RGBrgb(4, 80, 123)
RGB (0–1)0.0157, 0.3137, 0.4824
RGB percentages1.6%, 31.4%, 48.2%
HSLhsl(201.7, 93.7%, 24.9%)
HSV / HSBhsv(201.7, 96.7%, 48.2%)
CMYK96.7%, 35%, 0%, 51.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer282,747
CSS custom property--colour: #04507B;

Brightness & contrast

Relative luminance0.07193WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.61:1
Contrast with white8.61:1WCAG normal text: AAA
Contrast with black2.44:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#FBAF84

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3B517Dno red cones; affects about 1% of men; ΔE 9.3 from the original
Deuteranopia#2B477Ano green cones; the most common form, about 1% of men; ΔE 10.8 from the original
Tritanopia#005B5Fno blue cones; rare, and affects men and women equally; ΔE 27.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.61:1WCAG large text: AAA
Contrast with black, large text2.44:1WCAG large text: Fail

Named colours

Steel blue · ΔE 20.3Dark slate grey · ΔE 27.6Slate grey · ΔE 28.4Light slate grey · ΔE 30.4Dark slateblue · ΔE 32Dim grey · ΔE 32.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 20.34, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7B2F04
Analogous#047B6A, #04157B
Triadic#7B0450, #507B04
Split complementary#7B0415, #7B6A04
Tetradic#6A047B, #7B2F04, #157B04

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#52BDF9
Lighter +30%#20AAF8
Lighter +20%#0790DE
Lighter +10%#0670AC
Darker −10%#02304A
Darker −20%#011018
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00517F
Less saturated −25%#144C6B

Channel breakdown

R4
G80
B123
Red4 (1.6%)
Green80 (31.4%)
Blue123 (48.2%)
Hue201.68°
Saturation (HSL)93.7%
Lightness24.9%
Dominant channelBlue
Hex per channelR 04 · G 50 · B 7B

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “04507b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.