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Colour

#0A377D

  • #0A377D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0A377D is a blue with RGB values 10, 55, 125 and HSL 217°, 85%, 26%. It is a dark colour, so white text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0A377D#0A377D
HEX#0A377D
RGBrgb(10, 55, 125)
RGB (0–1)0.0392, 0.2157, 0.4902
RGB percentages3.9%, 21.6%, 49%
HSLhsl(216.5, 85.2%, 26.5%)
HSV / HSBhsv(216.5, 92%, 49%)
CMYK92%, 56%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer669,565
CSS custom property--colour: #0A377D;

Brightness & contrast

Relative luminance0.04278WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.32:1
Contrast with white11.32:1WCAG normal text: AAA
Contrast with black1.86:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#F5C882

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00407Fno red cones; affects about 1% of men; ΔE 7.4 from the original
Deuteranopia#00367Cno green cones; the most common form, about 1% of men; ΔE 0.8 from the original
Tritanopia#004854no blue cones; rare, and affects men and women equally; ΔE 42.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.32:1WCAG large text: AAA
Contrast with black, large text1.86:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.9Midnight blue · ΔE 19.9Rebecca purple · ΔE 29.4Slate blue · ΔE 32.9Royal blue · ΔE 33.7Steel blue · ΔE 35.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.92, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D500A
Analogous#0A717D, #160A7D
Triadic#7D0A37, #377D0A
Split complementary#7D160A, #717D0A
Tetradic#7D0A71, #7D500A, #0A7D16

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#619AF2
Lighter +30%#317BEF
Lighter +20%#1261DB
Lighter +10%#0E4CAC
Darker −10%#06224E
Darker −20%#020D1F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003587
Less saturated −25%#1B3B6C

Channel breakdown

R10
G55
B125
Red10 (3.9%)
Green55 (21.6%)
Blue125 (49%)
Hue216.52°
Saturation (HSL)85.19%
Lightness26.47%
Dominant channelBlue
Hex per channelR 0A · G 37 · B 7D

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Every value on this page was computed from “0a377d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.