#1F155A#1F155A
#1F155A is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.2% C 0.117 H 281.3°. Best body text is #FFFFFF at 15.99:1 contrast (WCAG AA passes).
Color values
| HEX | #1F155A |
|---|---|
| RGB | rgb(31, 21, 90) |
| HSL | hsl(249, 62%, 22%) |
| HSV | hsv(249, 77%, 35%) |
| CMYK | cmyk(65.6%, 76.7%, 0%, 64.7%) |
| CIE-LAB | lab(13.02, 27.07, -39.69) |
| CIE-LCH | lch(13.02, 48.04, 304.29°) |
| OKLab | oklab(26.19% 0.0228 -0.1144) |
| OKLCH | oklch(26.19% 0.117 281.3) |
| XYZ | xyz(2.6781, 1.5656, 9.8319) |
| Luminance | 0.0157 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dark Indigo
#1F0954
ΔE00 2.98
Midnight Blue
#191970
ΔE00 4.09
Darkblue (survey)
#030764
ΔE00 4.74
Night Blue
#040348
ΔE00 4.96
Dark Blue
#00035B
ΔE00 5.06
Navy Blue (survey)
#001146
ΔE00 5.36
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F155A #505A15
analogous
#152E5A #1F155A #42155A
triadic
#1F155A #5A1F15 #155A1F
tetradic
#1F155A #5A152E #505A15 #155A42
square
#1F155A #5A152E #505A15 #155A42
split-complementary
#1F155A #5A4215 #2E5A15
monochromatic
#090619 #0E0928 #1F155A #30218C #412CBD
Accessibility & contrast
On white
15.99
#1F155A on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.31
#1F155A on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F155A
15.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F155A | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F155A | 1.00 | 15.99 | 1.31 | 15.99 |
| #FFFFFF | 15.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.31 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 15.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#00245C
Deuteranopia (green-blind)
#001F59
Tritanopia (blue-blind)
#002836
Achromatopsia (no color)
#222222
Design tokens & code
CSS
--color: #1f155a; /* rgb */ color: rgb(31, 21, 90); /* oklch */ color: oklch(26.2% 0.117 281.3);
Tailwind
colors: {
custom: {
50: '#635389',
500: '#1f155a',
950: '#000000',
},
}SCSS
$custom: #1f155a; $custom-light: #635389; $custom-dark: #000000;
JSON
{
"hex": "#1f155a",
"rgb": {
"r": 31,
"g": 21,
"b": 90
},
"hsl": {
"h": 248.696,
"s": 62.162,
"l": 21.765
},
"oklch": {
"l": 0.26189,
"c": 0.11668,
"h": 281.3
},
"luminance": 0.01566
}Semantic roles & 50–950 ramp
primary
#1F155A
secondary
#859239
accent
#E543CE
background
#F6F4F8
surface
#EBE7F0
border
#C6C3CB
text
#06020C
muted
#7A787D