#101B3B#101B3B
#101B3B is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.2% C 0.064 H 267.1°. Best body text is #FFFFFF at 16.91:1 contrast (WCAG AA passes).
Color values
| HEX | #101B3B |
|---|---|
| RGB | rgb(16, 27, 59) |
| HSL | hsl(225, 57%, 15%) |
| HSV | hsv(225, 73%, 23%) |
| CMYK | cmyk(72.9%, 54.2%, 0%, 76.9%) |
| CIE-LAB | lab(10.63, 7.63, -22.18) |
| CIE-LCH | lch(10.63, 23.46, 288.99°) |
| OKLab | oklab(23.23% -0.0032 -0.0634) |
| OKLCH | oklch(23.23% 0.064 267.1) |
| XYZ | xyz(1.3948, 1.2097, 4.2968) |
| Luminance | 0.0121 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy (survey)
#01153E
ΔE00 3.34
Navy Blue
#1B2A4A
ΔE00 4.93
Dark Navy Blue
#00022E
ΔE00 5.72
Midnight
#03012D
ΔE00 5.96
Navy Blue (survey)
#001146
ΔE00 6.03
Dark Navy
#000435
ΔE00 6.14
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#101B3B #3B3010
analogous
#10313B #101B3B #1B103B
triadic
#101B3B #3B101B #1B3B10
tetradic
#101B3B #3B1031 #3B3010 #103B1B
square
#101B3B #3B1031 #3B3010 #103B1B
split-complementary
#101B3B #3B1B10 #313B10
monochromatic
#070B18 #070B18 #101B3B #1D316B #2A479B
Accessibility & contrast
On white
16.91
#101B3B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.24
#101B3B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #101B3B
16.91:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##101B3B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##101B3B | 1.00 | 16.91 | 1.24 | 16.91 |
| #FFFFFF | 16.91 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.24 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.91 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0B1F3C
Deuteranopia (green-blind)
#041B3A
Tritanopia (blue-blind)
#002228
Achromatopsia (no color)
#1D1D1D
Design tokens & code
CSS
--color: #101b3b; /* rgb */ color: rgb(16, 27, 59); /* oklch */ color: oklch(23.2% 0.064 267.1);
Tailwind
colors: {
custom: {
50: '#545671',
500: '#101b3b',
950: '#000000',
},
}SCSS
$custom: #101b3b; $custom-light: #545671; $custom-dark: #000000;
JSON
{
"hex": "#101b3b",
"rgb": {
"r": 16,
"g": 27,
"b": 59
},
"hsl": {
"h": 224.651,
"s": 57.333,
"l": 14.706
},
"oklch": {
"l": 0.23228,
"c": 0.0635,
"h": 267.1
},
"luminance": 0.0121
}Semantic roles & 50–950 ramp
primary
#101B3B
secondary
#756432
accent
#B947E1
background
#F4F5F6
surface
#E8E9EC
border
#C4C5C7
text
#030307
muted
#78787A