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Recognised as Colour

#237BDD

  • #237BDD
  • Blue
  • Dark
  • Nearest: Dodgerblue

#237BDD is a blue with RGB values 35, 123, 221 and HSL 212°, 73%, 50%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#237BDD#237BDD
HEX#237BDD
RGBrgb(35, 123, 221)
RGB (0–1)0.1373, 0.4824, 0.8667
RGB percentages13.7%, 48.2%, 86.7%
HSLhsl(211.6, 73.2%, 50.2%)
HSV / HSBhsv(211.6, 84.2%, 86.7%)
CMYK84.2%, 44.3%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,325,469
CSS custom property--colour: #237BDD;

Brightness & contrast

Relative luminance0.19744WCAG 2.x, 0 is black and 1 is white
Perceived brightness121.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.95:1
Contrast with white4.24:1WCAG normal text: Fail
Contrast with black4.95:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#DC8422

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4784E1no red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#1C73DBno green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#0093A1no blue cones; rare, and affects men and women equally; ΔE 55.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.24:1WCAG large text: AA
Contrast with black, large text4.95:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 10.1Cornflower blue · ΔE 13Royal blue · ΔE 18.3Slate blue · ΔE 26.5Medium purple · ΔE 27.6Steel blue · ΔE 28.7
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 10.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DD8523
Analogous#23D8DD, #2823DD
Triadic#DD237B, #7BDD23
Split complementary#DD2823, #D8DD23
Tetradic#DD23D8, #DD8523, #23DD28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D4E5F8
Lighter +30%#A8CBF1
Lighter +20%#7BB0EB
Lighter +10%#4F96E4
Darker −10%#1B62B2
Darker −20%#154A85
Darker −30%#0E3159
Darker −40%#07192D
More saturated +25%#0379FD
Less saturated −25%#437DBD

Channel breakdown

R35
G123
B221
Red35 (13.7%)
Green123 (48.2%)
Blue221 (86.7%)
Hue211.61°
Saturation (HSL)73.23%
Lightness50.2%
Dominant channelBlue
Hex per channelR 23 · G 7B · B DD

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Every value on this page was computed from “237bdd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.