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Recognised as Colour

#033DCA

  • #033DCA
  • Blue
  • Dark
  • Nearest: Medium slateblue

#033DCA is a blue with RGB values 3, 61, 202 and HSL 223°, 97%, 40%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#033DCA#033DCA
HEX#033DCA
RGBrgb(3, 61, 202)
RGB (0–1)0.0118, 0.2392, 0.7922
RGB percentages1.2%, 23.9%, 79.2%
HSLhsl(222.5, 97.1%, 40.2%)
HSV / HSBhsv(222.5, 98.5%, 79.2%)
CMYK98.5%, 69.8%, 0%, 20.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer212,426
CSS custom property--colour: #033DCA;

Brightness & contrast

Relative luminance0.07621WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.32:1
Contrast with white8.32:1WCAG normal text: AAA
Contrast with black2.52:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#FCC235

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0057CEno red cones; affects about 1% of men; ΔE 19.1 from the original
Deuteranopia#0045C7no green cones; the most common form, about 1% of men; ΔE 7.8 from the original
Tritanopia#00657Fno blue cones; rare, and affects men and women equally; ΔE 78.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.32:1WCAG large text: AAA
Contrast with black, large text2.52:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 21.8Dark blue · ΔE 21.8Slate blue · ΔE 22.6Royal blue · ΔE 23.7Navy · ΔE 24Indigo · ΔE 28.1
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CA9003
Analogous#03A0CA, #2D03CA
Triadic#CA033D, #3DCA03
Split complementary#CA2C03, #A1CA03
Tetradic#CA03A0, #CA9003, #03CA2C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9BB8FE
Lighter +30%#6994FD
Lighter +20%#3770FC
Lighter +10%#054DFB
Darker −10%#022E98
Darker −20%#021F65
Darker −30%#010F33
Darker −40%#000001
More saturated +25%#003CCD
Less saturated −25%#1D48B0

Channel breakdown

R3
G61
B202
Red3 (1.2%)
Green61 (23.9%)
Blue202 (79.2%)
Hue222.51°
Saturation (HSL)97.07%
Lightness40.2%
Dominant channelBlue
Hex per channelR 03 · G 3D · B CA

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Every value on this page was computed from “033dca” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.