Nerdulator> put something in

Recognised as Colour

#2B3457

  • #2B3457
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2B3457 is a blue with RGB values 43, 52, 87 and HSL 228°, 34%, 25%. It is a dark colour, so white text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2B3457#2B3457
HEX#2B3457
RGBrgb(43, 52, 87)
RGB (0–1)0.1686, 0.2039, 0.3412
RGB percentages16.9%, 20.4%, 34.1%
HSLhsl(227.7, 33.8%, 25.5%)
HSV / HSBhsv(227.7, 50.6%, 34.1%)
CMYK50.6%, 40.2%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,831,447
CSS custom property--colour: #2B3457;

Brightness & contrast

Relative luminance0.03658WCAG 2.x, 0 is black and 1 is white
Perceived brightness54.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.13:1
Contrast with white12.13:1WCAG normal text: AAA
Contrast with black1.73:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#D4CBA8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#273858no red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#233456no green cones; the most common form, about 1% of men; ΔE 2.6 from the original
Tritanopia#1B3B41no blue cones; rare, and affects men and women equally; ΔE 22.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.13:1WCAG large text: AAA
Contrast with black, large text1.73:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 27.9Dark slateblue · ΔE 28.6Dim grey · ΔE 32.1Black · ΔE 32.5Steel blue · ΔE 33.5Slate grey · ΔE 33.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 27.91, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#574E2B
Analogous#2B4A57, #382B57
Triadic#572B34, #34572B
Split complementary#57382B, #4A572B
Tetradic#572B4A, #574E2B, #2B5738

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8995C5
Lighter +30%#6777B4
Lighter +20%#4D5D9B
Lighter +10%#3C4879
Darker −10%#1A2035
Darker −20%#090B13
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1B2A67
Less saturated −25%#3B3E47

Channel breakdown

R43
G52
B87
Red43 (16.9%)
Green52 (20.4%)
Blue87 (34.1%)
Hue227.73°
Saturation (HSL)33.85%
Lightness25.49%
Dominant channelBlue
Hex per channelR 2B · G 34 · B 57

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “2b3457” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.