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Recognised as Colour

#033057

  • #033057
  • Blue
  • Dark
  • Nearest: Dark slateblue

#033057 is a blue with RGB values 3, 48, 87 and HSL 208°, 93%, 18%. It is a dark colour, so white text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#033057#033057
HEX#033057
RGBrgb(3, 48, 87)
RGB (0–1)0.0118, 0.1882, 0.3412
RGB percentages1.2%, 18.8%, 34.1%
HSLhsl(207.9, 93.3%, 17.6%)
HSV / HSBhsv(207.9, 96.6%, 34.1%)
CMYK96.6%, 44.8%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer208,983
CSS custom property--colour: #033057;

Brightness & contrast

Relative luminance0.02821WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.42:1
Contrast with white13.42:1WCAG normal text: AAA
Contrast with black1.56:1WCAG normal text: Fail
Greyscale equivalent#292929
Inverted#FCCFA8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1C3359no red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#0D2B56no green cones; the most common form, about 1% of men; ΔE 4.9 from the original
Tritanopia#00393Fno blue cones; rare, and affects men and women equally; ΔE 25.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.42:1WCAG large text: AAA
Contrast with black, large text1.56:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 30Dark slate grey · ΔE 30.2Black · ΔE 33.7Steel blue · ΔE 34.1Midnight blue · ΔE 36.8Dim grey · ΔE 37.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 30, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#572A03
Analogous#035754, #030657
Triadic#570330, #305703
Split complementary#570306, #575403
Tetradic#540357, #572A03, #065703

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2E9AF8
Lighter +30%#0882EB
Lighter +20%#0666BA
Lighter +10%#054B88
Darker −10%#011526
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00305A
Less saturated −25%#0E2F4C

Channel breakdown

R3
G48
B87
Red3 (1.2%)
Green48 (18.8%)
Blue87 (34.1%)
Hue207.86°
Saturation (HSL)93.33%
Lightness17.65%
Dominant channelBlue
Hex per channelR 03 · G 30 · B 57

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Every value on this page was computed from “hex 033057” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.