#10104B#10104B
#10104B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.4% C 0.105 H 273.9°. Best body text is #FFFFFF at 17.53:1 contrast (WCAG AA passes).
Color values
| HEX | #10104B |
|---|---|
| RGB | rgb(16, 16, 75) |
| HSL | hsl(240, 65%, 18%) |
| HSV | hsv(240, 79%, 29%) |
| CMYK | cmyk(78.7%, 78.7%, 0%, 70.6%) |
| CIE-LAB | lab(8.90, 22.64, -36.26) |
| CIE-LCH | lch(8.90, 42.75, 301.98°) |
| OKLab | oklab(22.42% 0.0072 -0.1049) |
| OKLCH | oklch(22.42% 0.105 273.9) |
| XYZ | xyz(1.6686, 0.9886, 6.7581) |
| Luminance | 0.0099 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy Blue (survey)
#001146
ΔE00 2.61
Night Blue
#040348
ΔE00 3.10
Dark Indigo
#1F0954
ΔE00 4.02
Midnight Blue (survey)
#020035
ΔE00 4.73
Dark Navy
#000435
ΔE00 5.06
Very Dark Blue
#000133
ΔE00 5.36
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#10104B #4B4B10
analogous
#102D4B #10104B #2D104B
triadic
#10104B #4B1010 #104B10
tetradic
#10104B #4B102D #4B4B10 #104B2D
square
#10104B #4B102D #4B4B10 #104B2D
split-complementary
#10104B #4B2D10 #2D4B10
monochromatic
#050519 #050519 #10104B #1B1B7D #2626B0
Accessibility & contrast
On white
17.53
#10104B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.20
#10104B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #10104B
17.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##10104B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##10104B | 1.00 | 17.53 | 1.20 | 17.53 |
| #FFFFFF | 17.53 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.20 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 17.53 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#001C4D
Deuteranopia (green-blind)
#00164A
Tritanopia (blue-blind)
#00202C
Achromatopsia (no color)
#191919
Design tokens & code
CSS
--color: #10104b; /* rgb */ color: rgb(16, 16, 75); /* oklch */ color: oklch(22.4% 0.105 273.9);
Tailwind
colors: {
custom: {
50: '#594e7e',
500: '#10104b',
950: '#000000',
},
}SCSS
$custom: #10104b; $custom-light: #594e7e; $custom-dark: #000000;
JSON
{
"hex": "#10104b",
"rgb": {
"r": 16,
"g": 16,
"b": 75
},
"hsl": {
"h": 240,
"s": 64.835,
"l": 17.843
},
"oklch": {
"l": 0.22415,
"c": 0.1051,
"h": 273.9
},
"luminance": 0.00989
}Semantic roles & 50–950 ramp
primary
#10104B
secondary
#858532
accent
#E840E8
background
#F5F4F7
surface
#E9E7EE
border
#C5C3C9
text
#04010A
muted
#79777C