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Recognised as Colour

#6387BF

  • #6387BF
  • Blue
  • Dark
  • Nearest: Steel blue

#6387BF is a blue with RGB values 99, 135, 191 and HSL 217°, 42%, 57%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#6387BF#6387BF
HEX#6387BF
RGBrgb(99, 135, 191)
RGB (0–1)0.3882, 0.5294, 0.749
RGB percentages38.8%, 52.9%, 74.9%
HSLhsl(216.5, 41.8%, 56.9%)
HSV / HSBhsv(216.5, 48.2%, 74.9%)
CMYK48.2%, 29.3%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,522,815
CSS custom property--colour: #6387BF;

Brightness & contrast

Relative luminance0.23742WCAG 2.x, 0 is black and 1 is white
Perceived brightness133.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.75:1
Contrast with white3.65:1WCAG normal text: Fail
Contrast with black5.75:1WCAG normal text: AA
Greyscale equivalent#838383
Inverted#9C7840

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#728BC1no red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#6782BEno green cones; the most common form, about 1% of men; ΔE 4.1 from the original
Tritanopia#3C939Bno blue cones; rare, and affects men and women equally; ΔE 33.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.65:1WCAG large text: AA
Contrast with black, large text5.75:1WCAG large text: AAA

Named colours

Steel blue · ΔE 7.8Cornflower blue · ΔE 18.4Light slate grey · ΔE 22.6Slate grey · ΔE 23.3Light skyblue · ΔE 28Deep skyblue · ΔE 28.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.82, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BF9B63
Analogous#63B5BF, #6D63BF
Triadic#BF6387, #87BF63
Split complementary#BF6D63, #B5BF63
Tetradic#BF63B5, #BF9B63, #63BF6D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4F6FA
Lighter +30%#CFDAEC
Lighter +20%#ABBFDD
Lighter +10%#87A3CE
Darker −10%#466DA9
Darker −20%#375585
Darker −30%#283E61
Darker −40%#19273D
More saturated +25%#4881DB
Less saturated −25%#7F8DA3

Channel breakdown

R99
G135
B191
Red99 (38.8%)
Green135 (52.9%)
Blue191 (74.9%)
Hue216.52°
Saturation (HSL)41.82%
Lightness56.86%
Dominant channelBlue
Hex per channelR 63 · G 87 · B BF

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Every value on this page was computed from “6387bf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.