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Recognised as Colour

#1A3951

  • #1A3951
  • Blue
  • Dark
  • Nearest: Dark slate grey

#1A3951 is a blue with RGB values 26, 57, 81 and HSL 206°, 51%, 21%. It is a dark colour, so white text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1A3951#1A3951
HEX#1A3951
RGBrgb(26, 57, 81)
RGB (0–1)0.102, 0.2235, 0.3176
RGB percentages10.2%, 22.4%, 31.8%
HSLhsl(206.2, 51.4%, 21%)
HSV / HSBhsv(206.2, 67.9%, 31.8%)
CMYK67.9%, 29.6%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,718,609
CSS custom property--colour: #1A3951;

Brightness & contrast

Relative luminance0.0374WCAG 2.x, 0 is black and 1 is white
Perceived brightness53.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.01:1
Contrast with white12.01:1WCAG normal text: AAA
Contrast with black1.75:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#E5C6AE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2E3952no red cones; affects about 1% of men; ΔE 6.1 from the original
Deuteranopia#273451no green cones; the most common form, about 1% of men; ΔE 6.9 from the original
Tritanopia#003F41no blue cones; rare, and affects men and women equally; ΔE 18.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.01:1WCAG large text: AAA
Contrast with black, large text1.75:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 18.8Dim grey · ΔE 28.3Black · ΔE 29.2Slate grey · ΔE 31Steel blue · ΔE 32.9Light slate grey · ΔE 33.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 18.81, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#51321A
Analogous#1A514E, #1A1D51
Triadic#511A39, #39511A
Split complementary#511A1D, #514E1A
Tetradic#4E1A51, #51321A, #1D511A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#68A2CF
Lighter +30%#428AC2
Lighter +20%#336F9E
Lighter +10%#265478
Darker −10%#0E1E2A
Darker −20%#010304
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0D3B5E
Less saturated −25%#273744

Channel breakdown

R26
G57
B81
Red26 (10.2%)
Green57 (22.4%)
Blue81 (31.8%)
Hue206.18°
Saturation (HSL)51.4%
Lightness20.98%
Dominant channelBlue
Hex per channelR 1A · G 39 · B 51

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Every value on this page was computed from “1a3951” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.