#2738B0#2738B0
#2738B0 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.5% C 0.189 H 269.4°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).
Color values
| HEX | #2738B0 |
|---|---|
| RGB | rgb(39, 56, 176) |
| HSL | hsl(233, 64%, 42%) |
| HSV | hsv(233, 78%, 69%) |
| CMYK | cmyk(77.8%, 68.2%, 0%, 31%) |
| CIE-LAB | lab(30.38, 36.78, -65.35) |
| CIE-LCH | lch(30.38, 74.99, 299.37°) |
| OKLab | oklab(41.47% -0.0021 -0.1892) |
| OKLCH | oklch(41.47% 0.189 269.4) |
| XYZ | xyz(10.0847, 6.3931, 41.7684) |
| Luminance | 0.0639 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 0.99
Blue Blue
#2242C7
ΔE00 4.06
Ocean Blue
#4F42B5
ΔE00 5.34
Blueberry
#464196
ΔE00 5.97
Blue With A Hint Of Purple
#533CC6
ΔE00 6.37
Cobalt
#0047AB
ΔE00 6.39
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2738B0 #B09F27
analogous
#277CB0 #2738B0 #5B27B0
triadic
#2738B0 #B02738 #38B027
tetradic
#2738B0 #B0277C #B09F27 #27B05B
square
#2738B0 #B0277C #B09F27 #27B05B
split-complementary
#2738B0 #B05B27 #7CB027
monochromatic
#11184C #1C287E #2738B0 #4052D5 #727FE0
Accessibility & contrast
On white
9.22
#2738B0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.28
#2738B0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2738B0
9.22:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2738B0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2738B0 | 1.00 | 9.22 | 2.28 | 9.22 |
| #FFFFFF | 9.22 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.28 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.22 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EB4
Deuteranopia (green-blind)
#0041AE
Tritanopia (blue-blind)
#00596F
Achromatopsia (no color)
#484848
Design tokens & code
CSS
--color: #2738b0; /* rgb */ color: rgb(39, 56, 176); /* oklch */ color: oklch(41.5% 0.189 269.4);
Tailwind
colors: {
custom: {
50: '#786fc9',
500: '#2738b0',
950: '#000000',
},
}SCSS
$custom: #2738b0; $custom-light: #786fc9; $custom-dark: #000000;
JSON
{
"hex": "#2738b0",
"rgb": {
"r": 39,
"g": 56,
"b": 176
},
"hsl": {
"h": 232.555,
"s": 63.721,
"l": 42.157
},
"oklch": {
"l": 0.41468,
"c": 0.18919,
"h": 269.4
},
"luminance": 0.06394
}Semantic roles & 50–950 ramp
primary
#2738B0
secondary
#C7BB6C
accent
#D241E7
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82