#2A21B0#2A21B0
#2A21B0 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.3% C 0.211 H 272.9°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).
Color values
| HEX | #2A21B0 |
|---|---|
| RGB | rgb(42, 33, 176) |
| HSL | hsl(244, 68%, 41%) |
| HSV | hsv(244, 81%, 69%) |
| CMYK | cmyk(76.1%, 81.3%, 0%, 31%) |
| CIE-LAB | lab(25.90, 50.05, -72.74) |
| CIE-LCH | lch(25.90, 88.30, 304.53°) |
| OKLab | oklab(38.32% 0.0108 -0.2105) |
| OKLCH | oklch(38.32% 0.211 272.9) |
| XYZ | xyz(9.3326, 4.7136, 41.4838) |
| Luminance | 0.0471 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Indigo Blue
#3A18B1
ΔE00 2.17
True Blue
#010FCC
ΔE00 3.82
Ultramarine
#2000B1
ΔE00 4.10
Cobalt Blue
#030AA7
ΔE00 4.33
Mediumblue
#0000CD
ΔE00 4.51
Royal Blue (survey)
#0504AA
ΔE00 4.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2A21B0 #A7B021
analogous
#215FB0 #2A21B0 #7121B0
triadic
#2A21B0 #B02A21 #21B02A
tetradic
#2A21B0 #B0215F #A7B021 #21B071
square
#2A21B0 #B0215F #A7B021 #21B071
split-complementary
#2A21B0 #B07121 #5FB021
monochromatic
#110E49 #1E177C #2A21B0 #3F35D9 #7069E3
Accessibility & contrast
On white
10.81
#2A21B0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.94
#2A21B0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2A21B0
10.81:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2A21B0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2A21B0 | 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)
#0044B4
Deuteranopia (green-blind)
#0036AE
Tritanopia (blue-blind)
#004E69
Achromatopsia (no color)
#3D3D3D
Design tokens & code
CSS
--color: #2a21b0; /* rgb */ color: rgb(42, 33, 176); /* oklch */ color: oklch(38.3% 0.211 272.9);
Tailwind
colors: {
custom: {
50: '#7b60c9',
500: '#2a21b0',
950: '#000000',
},
}SCSS
$custom: #2a21b0; $custom-light: #7b60c9; $custom-dark: #000000;
JSON
{
"hex": "#2a21b0",
"rgb": {
"r": 42,
"g": 33,
"b": 176
},
"hsl": {
"h": 243.776,
"s": 68.421,
"l": 40.98
},
"oklch": {
"l": 0.38324,
"c": 0.21074,
"h": 272.9
},
"luminance": 0.04715
}Semantic roles & 50–950 ramp
primary
#2A21B0
secondary
#C2C864
accent
#EB3DE0
background
#F8F5FC
surface
#EFEAF8
border
#CAC6D1
text
#0B0513
muted
#7C7982