#1F3333
Closest named color: Gunmetal (#293241). oklch(30.4% 0.026 195.9), rgb(31, 51, 51).
Aa
White text reads best on this color (13.29:1).
About this color
#1F3333 is a dark close to neutral grey. In OKLCH its lightness is 30%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.032 away. White text reads best on it, at 13.29:1.
| Hue family | Neutrals |
| Lightness | dark (30%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.57:1 |
| White text | 13.29:1 |
Values
| HEX | #1F3333 |
| RGB | rgb(31, 51, 51) |
| HSL | hsl(180, 24%, 16%) |
| OKLCH | oklch(30.4% 0.026 195.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1F3333 | 13.29:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #1F3333 | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #1F3333 text on white | 13.29:1 | AAA | Lc 99.6 | Preferred for body text |
| #1F3333 text on black | 1.57:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CDDDDD
oklch(88.6% 0.017 196.8)
-
Step 300
300
#ABC7C7
oklch(80.9% 0.03 196.6)
-
Step 400
400
#7DAAAA
oklch(70.6% 0.048 196.1)
-
Step 500
500
#5A9596
oklch(63% 0.062 197.1)
-
Step 600
600
#3D8080
oklch(55.7% 0.068 195.4)
-
Step 700
700
#2E6C6C
oklch(49.1% 0.063 195.3)
-
Step 800
800
#285858
oklch(42.7% 0.052 195.4)
-
Step 900
900
#254849
oklch(37.6% 0.041 198)
-
Step 950
950 (this color)
#1F3333
oklch(30.4% 0.026 195.9)
#1F3333 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #313133 | 0.028 |
| Deuteranopia (no green cones) | #2D2E33 | 0.026 |
| Tritanopia (no blue cones) | #173433 | 0.010 |
| Achromatopsia (no color) | #2F2F2F | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F3333
#1F3333
oklch(30.4% 0.026 195.9)
- #3B2A2A
#3B2A2A
oklch(30.5% 0.025 18.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1F3333, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.043
- Onyx #343A40 ΔE 0.046
- Midnight Green #073B4C ΔE 0.046
- Jet #212529 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.048
- Pakistan Green #283618 ΔE 0.049
- Oxford Blue #1B263B ΔE 0.053
Use #1F3333 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.