#153A81#153A81
#153A81 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.8% C 0.127 H 261.7°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).
Color values
| HEX | #153A81 |
|---|---|
| RGB | rgb(21, 58, 129) |
| HSL | hsl(219, 72%, 29%) |
| HSV | hsv(219, 84%, 51%) |
| CMYK | cmyk(83.7%, 55%, 0%, 49.4%) |
| CIE-LAB | lab(26.07, 15.33, -43.72) |
| CIE-LCH | lch(26.07, 46.33, 289.32°) |
| OKLab | oklab(36.79% -0.0183 -0.1261) |
| OKLCH | oklch(36.79% 0.127 261.7) |
| XYZ | xyz(5.7833, 4.7698, 21.3805) |
| Luminance | 0.0477 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 3.53
Marine Blue
#01386A
ΔE00 4.30
Twilight Blue
#0A437A
ΔE00 4.59
Cobalt (survey)
#1E488F
ΔE00 4.63
Marine
#042E60
ΔE00 5.59
Prussian Blue
#004577
ΔE00 6.18
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#153A81 #815C15
analogous
#157081 #153A81 #261581
triadic
#153A81 #81153A #3A8115
tetradic
#153A81 #811570 #815C15 #158126
square
#153A81 #811570 #815C15 #158126
split-complementary
#153A81 #812615 #708115
monochromatic
#040C1A #0C224C #153A81 #1E52B6 #336DDE
Accessibility & contrast
On white
10.75
#153A81 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.95
#153A81 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #153A81
10.75:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##153A81 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##153A81 | 1.00 | 10.75 | 1.95 | 10.75 |
| #FFFFFF | 10.75 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.95 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.75 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#024384
Deuteranopia (green-blind)
#003980
Tritanopia (blue-blind)
#004B57
Achromatopsia (no color)
#3E3E3E
Design tokens & code
CSS
--color: #153a81; /* rgb */ color: rgb(21, 58, 129); /* oklch */ color: oklch(36.8% 0.127 261.7);
Tailwind
colors: {
custom: {
50: '#666fa6',
500: '#153a81',
950: '#000000',
},
}SCSS
$custom: #153a81; $custom-light: #666fa6; $custom-dark: #000000;
JSON
{
"hex": "#153a81",
"rgb": {
"r": 21,
"g": 58,
"b": 129
},
"hsl": {
"h": 219.444,
"s": 72,
"l": 29.412
},
"oklch": {
"l": 0.36792,
"c": 0.12738,
"h": 261.7
},
"luminance": 0.04771
}Semantic roles & 50–950 ramp
primary
#153A81
secondary
#B68C3C
accent
#B039EF
background
#F6F6FA
surface
#EBECF4
border
#C6C7CE
text
#07070F
muted
#7A7A7F