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Colour

#000557

  • #000557
  • Blue
  • Dark
  • Nearest: Midnight blue

#000557 is a blue with RGB values 0, 5, 87 and HSL 237°, 100%, 17%. It is a dark colour, so white text on it reaches 18.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#000557#000557
HEX#000557
RGBrgb(0, 5, 87)
RGB (0–1)0, 0.0196, 0.3412
RGB percentages0%, 2%, 34.1%
HSLhsl(236.6, 100%, 17.1%)
HSV / HSBhsv(236.6, 100%, 34.1%)
CMYK100%, 94.3%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,367
CSS custom property--colour: #000557;

Brightness & contrast

Relative luminance0.00797WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.11:1
Contrast with white18.11:1WCAG normal text: AAA
Contrast with black1.16:1WCAG normal text: Fail
Greyscale equivalent#0A0A0A
Inverted#FFFAA8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001B59no red cones; affects about 1% of men; ΔE 16.6 from the original
Deuteranopia#001156no green cones; the most common form, about 1% of men; ΔE 9.3 from the original
Tritanopia#002130no blue cones; rare, and affects men and women equally; ΔE 51.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.11:1WCAG large text: AAA
Contrast with black, large text1.16:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9Navy · ΔE 23.5Indigo · ΔE 24Dark slateblue · ΔE 25.1Rebecca purple · ΔE 27.7Dark blue · ΔE 28.8
Nearest named CSS colourMidnight blue (#191970)ΔE 8.99, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#575200
Analogous#003057, #270057
Triadic#570005, #055700
Split complementary#572700, #305700
Tetradic#570031, #575200, #005727

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2431FF
Lighter +30%#000EF0
Lighter +20%#000BBD
Lighter +10%#00088A
Darker −10%#000224
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000557
Less saturated −25%#0B0F4C

Channel breakdown

R0
G5
B87
Red0 (0%)
Green5 (2%)
Blue87 (34.1%)
Hue236.55°
Saturation (HSL)100%
Lightness17.06%
Dominant channelBlue
Hex per channelR 00 · G 05 · B 57

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Every value on this page was computed from “hex 000557” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.