#153D7B#153D7B
#153D7B is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.115 H 259.2°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).
Color values
| HEX | #153D7B |
|---|---|
| RGB | rgb(21, 61, 123) |
| HSL | hsl(216, 71%, 28%) |
| HSV | hsv(216, 83%, 48%) |
| CMYK | cmyk(82.9%, 50.4%, 0%, 51.8%) |
| CIE-LAB | lab(26.52, 10.71, -39.21) |
| CIE-LCH | lch(26.52, 40.65, 285.27°) |
| OKLab | oklab(37% -0.0215 -0.1127) |
| OKLCH | oklch(37% 0.115 259.2) |
| XYZ | xyz(5.5518, 4.9263, 19.3933) |
| Luminance | 0.0493 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 2.28
Twilight Blue
#0A437A
ΔE00 3.06
Marine Blue
#01386A
ΔE00 3.21
Cobalt (survey)
#1E488F
ΔE00 4.07
Prussian Blue
#004577
ΔE00 4.71
Marine
#042E60
ΔE00 5.42
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#153D7B #7B5315
analogous
#15707B #153D7B #20157B
triadic
#153D7B #7B153D #3D7B15
tetradic
#153D7B #7B1570 #7B5315 #157B20
square
#153D7B #7B1570 #7B5315 #157B20
split-complementary
#153D7B #7B2015 #707B15
monochromatic
#040D1A #0C2347 #153D7B #1E57AF #2F73DB
Accessibility & contrast
On white
10.58
#153D7B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.99
#153D7B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #153D7B
10.58:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##153D7B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##153D7B | 1.00 | 10.58 | 1.99 | 10.58 |
| #FFFFFF | 10.58 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.58 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#19447D
Deuteranopia (green-blind)
#003A7A
Tritanopia (blue-blind)
#004C56
Achromatopsia (no color)
#3F3F3F
Design tokens & code
CSS
--color: #153d7b; /* rgb */ color: rgb(21, 61, 123); /* oklch */ color: oklch(37.0% 0.115 259.2);
Tailwind
colors: {
custom: {
50: '#6571a2',
500: '#153d7b',
950: '#000000',
},
}SCSS
$custom: #153d7b; $custom-light: #6571a2; $custom-dark: #000000;
JSON
{
"hex": "#153d7b",
"rgb": {
"r": 21,
"g": 61,
"b": 123
},
"hsl": {
"h": 216.471,
"s": 70.833,
"l": 28.235
},
"oklch": {
"l": 0.36996,
"c": 0.11478,
"h": 259.2
},
"luminance": 0.04927
}Semantic roles & 50–950 ramp
primary
#153D7B
secondary
#B0833B
accent
#A73AEE
background
#F6F6FA
surface
#EBECF3
border
#C6C7CD
text
#06070F
muted
#7A7A7F