#1F230B#1F230B
#1F230B is a very dark, muted yellow-green. Relative luminance 0.015; OKLCH L 24.5% C 0.041 H 117.3°. Best body text is #FFFFFF at 16.11:1 contrast (WCAG AA passes).
Color values
| HEX | #1F230B |
|---|---|
| RGB | rgb(31, 35, 11) |
| HSL | hsl(70, 52%, 9%) |
| HSV | hsv(70, 69%, 14%) |
| CMYK | cmyk(11.4%, 0%, 68.6%, 86.3%) |
| CIE-LAB | lab(12.72, -6.51, 14.14) |
| CIE-LCH | lch(12.72, 15.56, 114.73°) |
| OKLab | oklab(24.53% -0.0186 0.036) |
| OKLCH | oklch(24.53% 0.041 117.3) |
| XYZ | xyz(1.2265, 1.5175, 0.5448) |
| Luminance | 0.0152 (WCAG relative) |
| Temperature | warm |
| Family | yellow-green |
Closest named colors
Very Dark Green
#062E03
ΔE00 11.27
Dark Forest Green
#002D04
ΔE00 11.87
Dark Olive
#373E02
ΔE00 12.02
Dark Green
#033500
ΔE00 13.05
Charcoal (survey)
#343837
ΔE00 13.23
Almost Black
#070D0D
ΔE00 13.25
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F230B #0F0B23
analogous
#231B0B #1F230B #13230B
triadic
#1F230B #0B1F23 #230B1F
tetradic
#1F230B #0B231B #0F0B23 #230B13
square
#1F230B #0B231B #0F0B23 #230B13
split-complementary
#1F230B #0B1323 #1B0B23
monochromatic
#151707 #151707 #1F230B #48521A #718028
Accessibility & contrast
On white
16.11
#1F230B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.30
#1F230B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F230B
16.11:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F230B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F230B | 1.00 | 16.11 | 1.30 | 16.11 |
| #FFFFFF | 16.11 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.30 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.11 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#262109
Deuteranopia (green-blind)
#25210C
Tritanopia (blue-blind)
#21211E
Achromatopsia (no color)
#212121
Design tokens & code
CSS
--color: #1f230b; /* rgb */ color: rgb(31, 35, 11); /* oklch */ color: oklch(24.5% 0.041 117.3);
Tailwind
colors: {
custom: {
50: '#5b5d4b',
500: '#1f230b',
950: '#000000',
},
}SCSS
$custom: #1f230b; $custom-light: #5b5d4b; $custom-dark: #000000;
JSON
{
"hex": "#1f230b",
"rgb": {
"r": 31,
"g": 35,
"b": 11
},
"hsl": {
"h": 70,
"s": 52.174,
"l": 9.02
},
"oklch": {
"l": 0.24532,
"c": 0.04058,
"h": 117.3
},
"luminance": 0.01518
}Semantic roles & 50–950 ramp
primary
#1F230B
secondary
#342C5E
accent
#4CDC64
background
#F5F5F4
surface
#E9E9E7
border
#C5C5C3
text
#040401
muted
#797977