#374A9D#374A9D
#374A9D is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.1% C 0.136 H 270.2°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #374A9D |
|---|---|
| RGB | rgb(55, 74, 157) |
| HSL | hsl(229, 48%, 42%) |
| HSV | hsv(229, 65%, 62%) |
| CMYK | cmyk(65%, 52.9%, 0%, 38.4%) |
| CIE-LAB | lab(34.28, 20.17, -47.56) |
| CIE-LCH | lch(34.28, 51.66, 292.98°) |
| OKLab | oklab(44.1% 0.0005 -0.1364) |
| OKLCH | oklch(44.1% 0.136 270.2) |
| XYZ | xyz(10.1081, 8.1432, 32.9309) |
| Luminance | 0.0814 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 4.29
Cobalt (survey)
#1E488F
ΔE00 4.29
Blueberry
#464196
ΔE00 4.84
Sapphire
#0F52BA
ΔE00 5.74
Twilight
#4E518B
ΔE00 6.09
Sapphire (survey)
#2138AB
ΔE00 6.16
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#374A9D #9D8A37
analogous
#377D9D #374A9D #57379D
triadic
#374A9D #9D374A #4A9D37
tetradic
#374A9D #9D377D #9D8A37 #379D57
square
#374A9D #9D377D #9D8A37 #379D57
split-complementary
#374A9D #9D5737 #7D9D37
monochromatic
#171F42 #273570 #374A9D #5065C2 #7D8DD1
Accessibility & contrast
On white
7.99
#374A9D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#374A9D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #374A9D
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##374A9D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##374A9D | 1.00 | 7.99 | 2.63 | 7.99 |
| #FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#1755A0
Deuteranopia (green-blind)
#004C9B
Tritanopia (blue-blind)
#005D6C
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #374a9d; /* rgb */ color: rgb(55, 74, 157); /* oklch */ color: oklch(44.1% 0.136 270.2);
Tailwind
colors: {
custom: {
50: '#797cba',
500: '#374a9d',
950: '#000000',
},
}SCSS
$custom: #374a9d; $custom-light: #797cba; $custom-dark: #000000;
JSON
{
"hex": "#374a9d",
"rgb": {
"r": 55,
"g": 74,
"b": 157
},
"hsl": {
"h": 228.824,
"s": 48.113,
"l": 41.569
},
"oklch": {
"l": 0.44101,
"c": 0.13644,
"h": 270.2
},
"luminance": 0.08144
}Semantic roles & 50–950 ramp
primary
#374A9D
secondary
#BBAE75
accent
#BE50D8
background
#F7F7FB
surface
#EEEEF6
border
#C9C9D0
text
#0A0912
muted
#7C7B81