#153B7B#153B7B
#153B7B is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.117 H 260.3°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).
Color values
| HEX | #153B7B |
|---|---|
| RGB | rgb(21, 59, 123) |
| HSL | hsl(218, 71%, 28%) |
| HSV | hsv(218, 83%, 48%) |
| CMYK | cmyk(82.9%, 52%, 0%, 51.8%) |
| CIE-LAB | lab(25.91, 12.12, -40.20) |
| CIE-LCH | lch(25.91, 41.98, 286.77°) |
| OKLab | oklab(36.53% -0.0199 -0.1157) |
| OKLCH | oklch(36.53% 0.117 260.3) |
| XYZ | xyz(5.4471, 4.7168, 19.3584) |
| Luminance | 0.0472 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 2.94
Marine Blue
#01386A
ΔE00 3.35
Twilight Blue
#0A437A
ΔE00 3.79
Cobalt (survey)
#1E488F
ΔE00 4.58
Marine
#042E60
ΔE00 5.04
Prussian Blue
#004577
ΔE00 5.41
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#153B7B #7B5515
analogous
#156E7B #153B7B #22157B
triadic
#153B7B #7B153B #3B7B15
tetradic
#153B7B #7B156E #7B5515 #157B22
square
#153B7B #7B156E #7B5515 #157B22
split-complementary
#153B7B #7B2215 #6E7B15
monochromatic
#040D1A #0C2247 #153B7B #1E54AF #2F6FDB
Accessibility & contrast
On white
10.81
#153B7B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.94
#153B7B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #153B7B
10.81:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##153B7B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##153B7B | 1.00 | 10.81 | 1.94 | 10.81 |
| #FFFFFF | 10.81 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.94 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.81 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#13427D
Deuteranopia (green-blind)
#00397A
Tritanopia (blue-blind)
#004A55
Achromatopsia (no color)
#3D3D3D
Design tokens & code
CSS
--color: #153b7b; /* rgb */ color: rgb(21, 59, 123); /* oklch */ color: oklch(36.5% 0.117 260.3);
Tailwind
colors: {
custom: {
50: '#6570a2',
500: '#153b7b',
950: '#000000',
},
}SCSS
$custom: #153b7b; $custom-light: #6570a2; $custom-dark: #000000;
JSON
{
"hex": "#153b7b",
"rgb": {
"r": 21,
"g": 59,
"b": 123
},
"hsl": {
"h": 217.647,
"s": 70.833,
"l": 28.235
},
"oklch": {
"l": 0.36527,
"c": 0.11739,
"h": 260.3
},
"luminance": 0.04717
}Semantic roles & 50–950 ramp
primary
#153B7B
secondary
#B0853B
accent
#AB3AEE
background
#F6F6FA
surface
#EBECF3
border
#C6C7CD
text
#06070F
muted
#7A7A7F