#2F37BC#2F37BC
#2F37BC is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 42.9% C 0.203 H 271.5°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).
Color values
| HEX | #2F37BC |
|---|---|
| RGB | rgb(47, 55, 188) |
| HSL | hsl(237, 60%, 46%) |
| HSV | hsv(237, 75%, 74%) |
| CMYK | cmyk(75%, 70.7%, 0%, 26.3%) |
| CIE-LAB | lab(31.73, 42.37, -70.24) |
| CIE-LCH | lch(31.73, 82.03, 301.10°) |
| OKLab | oklab(42.9% 0.0053 -0.2033) |
| OKLCH | oklch(42.9% 0.203 271.5) |
| XYZ | xyz(11.6125, 6.9663, 48.2998) |
| Luminance | 0.0697 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 3.01
Blue Blue
#2242C7
ΔE00 3.59
Ocean Blue
#4F42B5
ΔE00 4.58
Blue With A Hint Of Purple
#533CC6
ΔE00 4.72
Blurple
#5539CC
ΔE00 5.22
Blue (survey)
#0343DF
ΔE00 5.57
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2F37BC #BCB42F
analogous
#2F7DBC #2F37BC #6D2FBC
triadic
#2F37BC #BC2F37 #37BC2F
tetradic
#2F37BC #BC2F7D #BCB42F #2FBC6D
square
#2F37BC #BC2F7D #BCB42F #2FBC6D
split-complementary
#2F37BC #BC6D2F #7DBC2F
monochromatic
#171A5A #23298B #2F37BC #545BD4 #858AE0
Accessibility & contrast
On white
8.77
#2F37BC on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.39
#2F37BC on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2F37BC
8.77:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2F37BC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2F37BC | 1.00 | 8.77 | 2.39 | 8.77 |
| #FFFFFF | 8.77 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.39 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.77 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051C0
Deuteranopia (green-blind)
#0044BA
Tritanopia (blue-blind)
#005C75
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #2f37bc; /* rgb */ color: rgb(47, 55, 188); /* oklch */ color: oklch(42.9% 0.203 271.5);
Tailwind
colors: {
custom: {
50: '#7e6fd1',
500: '#2f37bc',
950: '#000000',
},
}SCSS
$custom: #2f37bc; $custom-light: #7e6fd1; $custom-dark: #000000;
JSON
{
"hex": "#2f37bc",
"rgb": {
"r": 47,
"g": 55,
"b": 188
},
"hsl": {
"h": 236.596,
"s": 60,
"l": 46.078
},
"oklch": {
"l": 0.42904,
"c": 0.20335,
"h": 271.5
},
"luminance": 0.06968
}Semantic roles & 50–950 ramp
primary
#2F37BC
secondary
#CAC67D
accent
#DA45E3
background
#F8F6FD
surface
#F0ECFA
border
#CBC7D3
text
#0C0714
muted
#7D7A83