#2A21B3#2A21B3
#2A21B3 is a dark, highly saturated blue. Relative luminance 0.048; OKLCH L 38.7% C 0.214 H 272.7°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).
Color values
| HEX | #2A21B3 |
|---|---|
| RGB | rgb(42, 33, 179) |
| HSL | hsl(244, 69%, 42%) |
| HSV | hsv(244, 82%, 70%) |
| CMYK | cmyk(76.5%, 81.6%, 0%, 29.8%) |
| CIE-LAB | lab(26.26, 50.98, -73.95) |
| CIE-LCH | lch(26.26, 89.82, 304.58°) |
| OKLab | oklab(38.67% 0.0101 -0.214) |
| OKLCH | oklch(38.67% 0.214 272.7) |
| XYZ | xyz(9.6327, 4.8336, 43.0644) |
| Luminance | 0.0483 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Indigo Blue
#3A18B1
ΔE00 2.15
True Blue
#010FCC
ΔE00 3.53
Ultramarine
#2000B1
ΔE00 4.16
Mediumblue
#0000CD
ΔE00 4.28
Cobalt Blue
#030AA7
ΔE00 4.51
Royal Blue (survey)
#0504AA
ΔE00 4.72
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2A21B3 #AAB321
analogous
#2161B3 #2A21B3 #7321B3
triadic
#2A21B3 #B32A21 #21B32A
tetradic
#2A21B3 #B32161 #AAB321 #21B373
square
#2A21B3 #B32161 #AAB321 #21B373
split-complementary
#2A21B3 #B37321 #61B321
monochromatic
#120E4C #1E177F #2A21B3 #4137DA #726BE4
Accessibility & contrast
On white
10.68
#2A21B3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.97
#2A21B3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2A21B3
10.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2A21B3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2A21B3 | 1.00 | 10.68 | 1.97 | 10.68 |
| #FFFFFF | 10.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.97 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0045B7
Deuteranopia (green-blind)
#0037B1
Tritanopia (blue-blind)
#004F6B
Achromatopsia (no color)
#3E3E3E
Design tokens & code
CSS
--color: #2a21b3; /* rgb */ color: rgb(42, 33, 179); /* oklch */ color: oklch(38.7% 0.214 272.7);
Tailwind
colors: {
custom: {
50: '#7c61cb',
500: '#2a21b3',
950: '#000000',
},
}SCSS
$custom: #2a21b3; $custom-light: #7c61cb; $custom-dark: #000000;
JSON
{
"hex": "#2a21b3",
"rgb": {
"r": 42,
"g": 33,
"b": 179
},
"hsl": {
"h": 243.699,
"s": 68.868,
"l": 41.569
},
"oklch": {
"l": 0.38671,
"c": 0.21421,
"h": 272.7
},
"luminance": 0.04835
}Semantic roles & 50–950 ramp
primary
#2A21B3
secondary
#C3CA66
accent
#EC3CE1
background
#F8F5FC
surface
#F0EAF9
border
#CBC6D2
text
#0B0514
muted
#7C7982