#253FB4#253FB4
#253FB4 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.187 H 267.6°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).
Color values
| HEX | #253FB4 |
|---|---|
| RGB | rgb(37, 63, 180) |
| HSL | hsl(229, 66%, 43%) |
| HSV | hsv(229, 79%, 71%) |
| CMYK | cmyk(79.4%, 65%, 0%, 29.4%) |
| CIE-LAB | lab(32.35, 33.58, -64.50) |
| CIE-LCH | lch(32.35, 72.72, 297.50°) |
| OKLab | oklab(43% -0.0079 -0.1867) |
| OKLCH | oklch(43% 0.187 267.6) |
| XYZ | xyz(10.7758, 7.2424, 44.0012) |
| Luminance | 0.0724 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.28
Blue Blue
#2242C7
ΔE00 2.61
Cobalt
#0047AB
ΔE00 4.62
Ocean Blue
#4F42B5
ΔE00 5.20
Blue (survey)
#0343DF
ΔE00 5.43
Blueberry
#464196
ΔE00 6.06
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#253FB4 #B49A25
analogous
#2586B4 #253FB4 #5325B4
triadic
#253FB4 #B4253F #3FB425
tetradic
#253FB4 #B42586 #B49A25 #25B453
square
#253FB4 #B42586 #B49A25 #25B453
split-complementary
#253FB4 #B45325 #86B425
monochromatic
#101B4E #1B2D81 #253FB4 #3F5AD7 #7186E2
Accessibility & contrast
On white
8.58
#253FB4 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.45
#253FB4 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #253FB4
8.58:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##253FB4 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##253FB4 | 1.00 | 8.58 | 2.45 | 8.58 |
| #FFFFFF | 8.58 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.45 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.58 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0053B8
Deuteranopia (green-blind)
#0045B2
Tritanopia (blue-blind)
#005E74
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #253fb4; /* rgb */ color: rgb(37, 63, 180); /* oklch */ color: oklch(43.0% 0.187 267.6);
Tailwind
colors: {
custom: {
50: '#7874cb',
500: '#253fb4',
950: '#000000',
},
}SCSS
$custom: #253fb4; $custom-light: #7874cb; $custom-dark: #000000;
JSON
{
"hex": "#253fb4",
"rgb": {
"r": 37,
"g": 63,
"b": 180
},
"hsl": {
"h": 229.091,
"s": 65.899,
"l": 42.549
},
"oklch": {
"l": 0.42997,
"c": 0.18686,
"h": 267.6
},
"luminance": 0.07244
}Semantic roles & 50–950 ramp
primary
#253FB4
secondary
#C9B86C
accent
#CA3FE9
background
#F8F7FC
surface
#EFEDF9
border
#CAC8D2
text
#0B0813
muted
#7C7B82