250 Cobalt Blue

Old Holland Classic Watercolours

Company
Old Holland (4 products)
Medium
Watercolor
Pigments
  • PB28 ●●●●●
Transparency
Opaque
Lab 2D planes
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Sample
Old Holland Classic Watercolours 250 Cobalt Blue PB28 measurement swatch
watercolor
masstone
Display P3
sRGB
Value scale
Color Atlases
HLC H270_L045_C055
Color Notation (CIE L*a*b*)
L* 42.89 a* 2.31 b* -54.26 D50
L* 42.89 C* 54.31 272.43 D50

Sample
watercolor, masstone
Paper
Hahnemühle Echt Bütten CP 300gsm
Device
Nix Spectro 2
Mode
M2 (light source: Tungsten + UV-cut filter)
CIE-L*a*b*
L* 42.89 a* 2.31 b* -54.26 D50
L* 51.33 a* -4.46 b* -38.96 D65
CIE-L*Ch°(ab)
L* 42.89 C* 54.31 272.43 D50
L* 51.33 C* 39.21 263.47 D65
CIE-V*D*
V*ab 69.21 D*ab 78.81 D50
OK-Lab + Ch°
L 0.5176 a -0.0441 b -0.1527 C 0.1590 253.8820 D65
Munsell
Munsell 5.6PB 4.3/13.0 C
CIECAM02
J 32.4 C 60.7 250.1 s 60.6 Q 172.1 M 63.1 D65
RGB
sRGB: r 11 g 103 b 192 hex #0B67C0
P3: r 0.179 g 0.399 b 0.729
Spectral Curve
Disclaimer
Read about the samples and measurement methodology.
Color Mixes (experimental) 
1:0
3:1
3:2
1:1
2:3
1:3
0:1
Color mixer is an experimental feature using Mixbox: Pigment-Based Color Mixing. (Mixing within the sRGB gamut, assuming the colors were opaque colors.)
Color mixer is an experimental feature using the paints' spectral curves, measured on masstone to predict the mixing path, assuming the paints were opaque.
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247 Old Holland Cyan Blue
PW4
Next paint on the chart
253 King's Blue Deep
PW4