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Colour

#1B5963

  • #1B5963
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#1B5963 is a cyan with RGB values 27, 89, 99 and HSL 188°, 57%, 25%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1B5963#1B5963
HEX#1B5963
RGBrgb(27, 89, 99)
RGB (0–1)0.1059, 0.349, 0.3882
RGB percentages10.6%, 34.9%, 38.8%
HSLhsl(188.3, 57.1%, 24.7%)
HSV / HSBhsv(188.3, 72.7%, 38.8%)
CMYK72.7%, 10.1%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,792,355
CSS custom property--colour: #1B5963;

Brightness & contrast

Relative luminance0.08279WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.91:1
Contrast with white7.91:1WCAG normal text: AAA
Contrast with black2.66:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#E4A69C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#515664no red cones; affects about 1% of men; ΔE 17.5 from the original
Deuteranopia#464E63no green cones; the most common form, about 1% of men; ΔE 18.2 from the original
Tritanopia#005D5Cno blue cones; rare, and affects men and women equally; ΔE 9.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.91:1WCAG large text: AAA
Contrast with black, large text2.66:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.4Teal · ΔE 19.1Dim grey · ΔE 21.9Slate grey · ΔE 22.9Dark cyan · ΔE 23.2Light slate grey · ΔE 25.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.38, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#63251B
Analogous#1B6349, #1B3563
Triadic#631B59, #59631B
Split complementary#631B35, #63491B
Tetradic#491B63, #63251B, #35631B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#72CAD8
Lighter +30%#49BBCE
Lighter +20%#31A1B3
Lighter +10%#267D8B
Darker −10%#10353B
Darker −20%#051113
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B6473
Less saturated −25%#2B4E53

Channel breakdown

R27
G89
B99
Red27 (10.6%)
Green89 (34.9%)
Blue99 (38.8%)
Hue188.33°
Saturation (HSL)57.14%
Lightness24.71%
Dominant channelBlue
Hex per channelR 1B · G 59 · B 63

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Every value on this page was computed from “1b5963” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.