#101D3B#101D3B
#101D3B is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.7% C 0.060 H 264.6°. Best body text is #FFFFFF at 16.65:1 contrast (WCAG AA passes).
Color values
| HEX | #101D3B |
|---|---|
| RGB | rgb(16, 29, 59) |
| HSL | hsl(222, 57%, 15%) |
| HSV | hsv(222, 73%, 23%) |
| CMYK | cmyk(72.9%, 50.8%, 0%, 76.9%) |
| CIE-LAB | lab(11.31, 6.08, -21.09) |
| CIE-LCH | lch(11.31, 21.95, 286.08°) |
| OKLab | oklab(23.75% -0.0057 -0.0602) |
| OKLCH | oklch(23.75% 0.06 264.6) |
| XYZ | xyz(1.4422, 1.3045, 4.3126) |
| Luminance | 0.0131 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy (survey)
#01153E
ΔE00 4.07
Navy Blue
#1B2A4A
ΔE00 4.17
Dark Navy Blue
#00022E
ΔE00 6.60
Navy Blue (survey)
#001146
ΔE00 6.74
Midnight
#03012D
ΔE00 6.92
Dark Navy
#000435
ΔE00 7.03
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#101D3B #3B2E10
analogous
#10333B #101D3B #18103B
triadic
#101D3B #3B101D #1D3B10
tetradic
#101D3B #3B1033 #3B2E10 #103B18
square
#101D3B #3B1033 #3B2E10 #103B18
split-complementary
#101D3B #3B1810 #333B10
monochromatic
#070C18 #070C18 #101D3B #1D356B #2A4C9B
Accessibility & contrast
On white
16.65
#101D3B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.26
#101D3B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #101D3B
16.65:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##101D3B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##101D3B | 1.00 | 16.65 | 1.26 | 16.65 |
| #FFFFFF | 16.65 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.26 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.65 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0F203C
Deuteranopia (green-blind)
#081C3A
Tritanopia (blue-blind)
#002429
Achromatopsia (no color)
#1E1E1E
Design tokens & code
CSS
--color: #101d3b; /* rgb */ color: rgb(16, 29, 59); /* oklch */ color: oklch(23.7% 0.060 264.6);
Tailwind
colors: {
custom: {
50: '#535871',
500: '#101d3b',
950: '#000000',
},
}SCSS
$custom: #101d3b; $custom-light: #535871; $custom-dark: #000000;
JSON
{
"hex": "#101d3b",
"rgb": {
"r": 16,
"g": 29,
"b": 59
},
"hsl": {
"h": 221.86,
"s": 57.333,
"l": 14.706
},
"oklch": {
"l": 0.23748,
"c": 0.06046,
"h": 264.6
},
"luminance": 0.01305
}Semantic roles & 50–950 ramp
primary
#101D3B
secondary
#756132
accent
#B247E1
background
#F4F5F6
surface
#E8E9EC
border
#C4C5C7
text
#030307
muted
#78787A