#171957#171957
#171957 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.9% C 0.109 H 274.3°. Best body text is #FFFFFF at 15.99:1 contrast (WCAG AA passes).
Color values
| HEX | #171957 |
|---|---|
| RGB | rgb(23, 25, 87) |
| HSL | hsl(238, 58%, 22%) |
| HSV | hsv(238, 74%, 34%) |
| CMYK | cmyk(73.6%, 71.3%, 0%, 65.9%) |
| CIE-LAB | lab(13.02, 22.03, -37.70) |
| CIE-LCH | lch(13.02, 43.67, 300.31°) |
| OKLab | oklab(25.92% 0.0083 -0.1088) |
| OKLCH | oklch(25.92% 0.109 274.3) |
| XYZ | xyz(2.4207, 1.5653, 9.1895) |
| Luminance | 0.0157 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy Blue (survey)
#001146
ΔE00 3.85
Midnight Blue
#191970
ΔE00 4.71
Dark Indigo
#1F0954
ΔE00 5.02
Night Blue
#040348
ΔE00 5.48
Navy (survey)
#01153E
ΔE00 5.85
Darkblue (survey)
#030764
ΔE00 5.97
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#171957 #575517
analogous
#173957 #171957 #351757
triadic
#171957 #571719 #195717
tetradic
#171957 #571739 #575517 #175735
square
#171957 #571739 #575517 #175735
split-complementary
#171957 #573517 #395717
monochromatic
#060718 #0A0B27 #171957 #242787 #3135B8
Accessibility & contrast
On white
15.99
#171957 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.31
#171957 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #171957
15.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##171957 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##171957 | 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)
#002559
Deuteranopia (green-blind)
#001F56
Tritanopia (blue-blind)
#002935
Achromatopsia (no color)
#222222
Design tokens & code
CSS
--color: #171957; /* rgb */ color: rgb(23, 25, 87); /* oklch */ color: oklch(25.9% 0.109 274.3);
Tailwind
colors: {
custom: {
50: '#5e5687',
500: '#171957',
950: '#000000',
},
}SCSS
$custom: #171957; $custom-light: #5e5687; $custom-dark: #000000;
JSON
{
"hex": "#171957",
"rgb": {
"r": 23,
"g": 25,
"b": 87
},
"hsl": {
"h": 238.125,
"s": 58.182,
"l": 21.569
},
"oklch": {
"l": 0.2592,
"c": 0.10915,
"h": 274.3
},
"luminance": 0.01566
}Semantic roles & 50–950 ramp
primary
#171957
secondary
#8E8B3C
accent
#DD46E1
background
#F5F5F8
surface
#EAE9EF
border
#C6C5CA
text
#05030B
muted
#79787C