Nerdulator> put something in

Recognised as Colour

#018BD4

  • #018BD4
  • Blue
  • Dark
  • Nearest: Steel blue

#018BD4 is a blue with RGB values 1, 139, 212 and HSL 201°, 99%, 42%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#018BD4#018BD4
HEX#018BD4
RGBrgb(1, 139, 212)
RGB (0–1)0.0039, 0.5451, 0.8314
RGB percentages0.4%, 54.5%, 83.1%
HSLhsl(200.8, 99.1%, 41.8%)
HSV / HSBhsv(200.8, 99.5%, 83.1%)
CMYK99.5%, 34.4%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer101,332
CSS custom property--colour: #018BD4;

Brightness & contrast

Relative luminance0.23225WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.65:1
Contrast with white3.72:1WCAG normal text: Fail
Contrast with black5.65:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#FE742B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#678DD7no red cones; affects about 1% of men; ΔE 13.3 from the original
Deuteranopia#4C7DD3no green cones; the most common form, about 1% of men; ΔE 15.6 from the original
Tritanopia#009DA5no blue cones; rare, and affects men and women equally; ΔE 41.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.72:1WCAG large text: AA
Contrast with black, large text5.65:1WCAG large text: AAA

Named colours

Steel blue · ΔE 14.1Cornflower blue · ΔE 15.7Deep skyblue · ΔE 22Dodgerblue · ΔE 22.9Light skyblue · ΔE 30.7Light slate grey · ΔE 35
Nearest named CSS colourSteel blue (#4682B4)ΔE 14.13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D44A01
Analogous#01D4B3, #0122D4
Triadic#D4018B, #8BD401
Split complementary#D40122, #D4B301
Tetradic#B301D4, #D44A01, #22D401

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A2DFFF
Lighter +30%#70CDFE
Lighter +20%#3DBBFE
Lighter +10%#0AAAFE
Darker −10%#016AA1
Darker −20%#01486E
Darker −30%#00273C
Darker −40%#000609
More saturated +25%#008BD5
Less saturated −25%#1C83B9

Channel breakdown

R1
G139
B212
Red1 (0.4%)
Green139 (54.5%)
Blue212 (83.1%)
Hue200.76°
Saturation (HSL)99.06%
Lightness41.76%
Dominant channelBlue
Hex per channelR 01 · G 8B · B D4

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 “018bd4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.