#1D40B0#1D40B0
#1D40B0 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.5% C 0.182 H 265.5°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).
Color values
| HEX | #1D40B0 |
|---|---|
| RGB | rgb(29, 64, 176) |
| HSL | hsl(226, 72%, 40%) |
| HSV | hsv(226, 84%, 69%) |
| CMYK | cmyk(83.5%, 63.6%, 0%, 31%) |
| CIE-LAB | lab(31.95, 30.74, -62.80) |
| CIE-LCH | lch(31.95, 69.92, 296.08°) |
| OKLab | oklab(42.5% -0.0145 -0.1818) |
| OKLCH | oklch(42.5% 0.182 265.5) |
| XYZ | xyz(10.1738, 7.0614, 41.8926) |
| Luminance | 0.0706 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.57
Blue Blue
#2242C7
ΔE00 3.29
Cobalt
#0047AB
ΔE00 3.59
Blue (survey)
#0343DF
ΔE00 6.00
Ocean Blue
#4F42B5
ΔE00 6.13
Cobalt (survey)
#1E488F
ΔE00 6.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1D40B0 #B08D1D
analogous
#1D8AB0 #1D40B0 #431DB0
triadic
#1D40B0 #B01D40 #40B01D
tetradic
#1D40B0 #B01D8A #B08D1D #1DB043
square
#1D40B0 #B01D8A #B08D1D #1DB043
split-complementary
#1D40B0 #B0431D #8AB01D
monochromatic
#0C1A47 #142D7B #1D40B0 #2E57DD #6281E5
Accessibility & contrast
On white
8.70
#1D40B0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.41
#1D40B0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1D40B0
8.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1D40B0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1D40B0 | 1.00 | 8.70 | 2.41 | 8.70 |
| #FFFFFF | 8.70 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.41 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.70 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0052B4
Deuteranopia (green-blind)
#0044AE
Tritanopia (blue-blind)
#005E72
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #1d40b0; /* rgb */ color: rgb(29, 64, 176); /* oklch */ color: oklch(42.5% 0.182 265.5);
Tailwind
colors: {
custom: {
50: '#7574c9',
500: '#1d40b0',
950: '#000000',
},
}SCSS
$custom: #1d40b0; $custom-light: #7574c9; $custom-dark: #000000;
JSON
{
"hex": "#1d40b0",
"rgb": {
"r": 29,
"g": 64,
"b": 176
},
"hsl": {
"h": 225.714,
"s": 71.707,
"l": 40.196
},
"oklch": {
"l": 0.42504,
"c": 0.18241,
"h": 265.5
},
"luminance": 0.07063
}Semantic roles & 50–950 ramp
primary
#1D40B0
secondary
#CAB05F
accent
#C339EE
background
#F7F7FC
surface
#EEEDF8
border
#C9C8D1
text
#0A0813
muted
#7C7B82