#312AA3#312AA3
#312AA3 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.5% C 0.185 H 275.8°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).
Color values
| HEX | #312AA3 |
|---|---|
| RGB | rgb(49, 42, 163) |
| HSL | hsl(243, 59%, 40%) |
| HSV | hsv(243, 74%, 64%) |
| CMYK | cmyk(69.9%, 74.2%, 0%, 36.1%) |
| CIE-LAB | lab(26.60, 41.75, -63.74) |
| CIE-LCH | lch(26.60, 76.20, 303.22°) |
| OKLab | oklab(38.52% 0.0187 -0.1842) |
| OKLCH | oklch(38.52% 0.185 275.8) |
| XYZ | xyz(8.7033, 4.9524, 35.1405) |
| Luminance | 0.0495 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Indigo Blue
#3A18B1
ΔE00 4.05
Sapphire (survey)
#2138AB
ΔE00 4.50
Royal
#0C1793
ΔE00 5.33
Cobalt Blue
#030AA7
ΔE00 5.99
Ultramarine
#2000B1
ΔE00 6.25
True Blue
#010FCC
ΔE00 6.29
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#312AA3 #9CA32A
analogous
#2A60A3 #312AA3 #6D2AA3
triadic
#312AA3 #A3312A #2AA331
tetradic
#312AA3 #A32A60 #9CA32A #2AA36D
square
#312AA3 #A32A60 #9CA32A #2AA36D
split-complementary
#312AA3 #A36D2A #60A32A
monochromatic
#141142 #221D72 #312AA3 #453DCD #746EDA
Accessibility & contrast
On white
10.55
#312AA3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.99
#312AA3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #312AA3
10.55:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##312AA3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##312AA3 | 1.00 | 10.55 | 1.99 | 10.55 |
| #FFFFFF | 10.55 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.55 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0044A7
Deuteranopia (green-blind)
#0039A1
Tritanopia (blue-blind)
#004C64
Achromatopsia (no color)
#3F3F3F
Design tokens & code
CSS
--color: #312aa3; /* rgb */ color: rgb(49, 42, 163); /* oklch */ color: oklch(38.5% 0.185 275.8);
Tailwind
colors: {
custom: {
50: '#7a65bf',
500: '#312aa3',
950: '#000000',
},
}SCSS
$custom: #312aa3; $custom-light: #7a65bf; $custom-dark: #000000;
JSON
{
"hex": "#312aa3",
"rgb": {
"r": 49,
"g": 42,
"b": 163
},
"hsl": {
"h": 243.471,
"s": 59.024,
"l": 40.196
},
"oklch": {
"l": 0.38516,
"c": 0.18519,
"h": 275.8
},
"luminance": 0.04953
}Semantic roles & 50–950 ramp
primary
#312AA3
secondary
#BBC068
accent
#E246D9
background
#F8F6FB
surface
#EFEBF7
border
#CAC6D0
text
#0B0612
muted
#7C7A81