huebic
Colors / blue

#17313B

#17313Boklch(0.2972 0.0367 225.2)

#17313B (#17313B) is a very dark greyish blue, closest to the CSS color darkslategray. In OKLCH it has lightness 29.7%, chroma 0.037 and hue 225.2°; its relative luminance is 2.7%. White text reads best on it (APCA Lc 103, WCAG 13.65:1). It prints well on coated paper (FOGRA39, ΔE00 0.5).

#17313B in every format

HEX#17313B
RGBrgb(23 49 59)
HSLhsl(196.7 43.9% 16.1%)
HSB / HSVhsb(196.7 61.0% 23.1%)
HWBhwb(196.7 9.0% 76.9%)
CMYK (formula)cmyk(61/17/0/77)
CMYK (FOGRA39 coated)cmyk(89/64/53/59)
CIELAB (D50)lab(18.62 -7.78 -9.62)
LChlch(18.62 12.37 231.0)
OKLaboklab(0.2972 -0.0259 -0.0260)
OKLCHoklch(0.2972 0.0367 225.2)
CIE XYZ (D65)color(xyz-d65 0.02241 0.02694 0.04540)
CIE xyYxyY(0.2365 0.2844 0.0269)
Display P3color(display-p3 0.1149 0.1897 0.2271)
Linear sRGBcolor(srgb-linear 0.00857 0.03071 0.04374)
CSS name—

Text on #17313B

White textWCAG 13.65:1 · APCA Lc 103
Black textWCAG 1.54:1 · APCA Lc 0

Color blindness

Machado 2009 simulation
#17313Bnormal
#2C303Cprotanopia
#262C3Bdeuteranopia
#023434tritanopia

Tints and shades

OKLCH lightness steps, hue held
#D6F4FF
#BFDDEA
#A6C3D0
#8DAAB6
#75919D
#5E7985
#47626D
#324C57
#1D3741
#08232C
#001019

Harmonies

hue rotations in OKLCH
Complementary
#17313B
#3D271E
Analogous
#17313B
#143333
#212E3F
Triadic
#17313B
#3B2631
#302E18
Split complementary
#17313B
#3E2527
#382A18
Tetradic
#17313B
#34273A
#3D271E
#25311F

Similar colors

nearest by CIEDE2000

Palettes with #17313B

all palettes →
Nighthawks · inspired by Edward Hopper