#1F2F2B
Closest named color: Jet (#212529). oklch(28.9% 0.023 177.4), rgb(31, 47, 43).
Aa
White text reads best on this color (14.00:1).
About this color
#1F2F2B is a dark close to neutral grey. In OKLCH its lightness is 29%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.035 away. White text reads best on it, at 14.00:1.
| Hue family | Neutrals |
| Lightness | dark (29%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.49:1 |
| White text | 14.00:1 |
Values
| HEX | #1F2F2B |
| RGB | rgb(31, 47, 43) |
| HSL | hsl(165, 21%, 15%) |
| OKLCH | oklch(28.9% 0.023 177.4) |
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 #1F2F2B | 14.00:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #1F2F2B | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #1F2F2B text on white | 14.00:1 | AAA | Lc 100.6 | Preferred for body text |
| #1F2F2B text on black | 1.49:1 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#CFDCD9
oklch(88.4% 0.015 180.7)
-
Step 300
300
#AFC7C0
oklch(81% 0.028 176.2)
-
Step 400
400
#85AAA0
oklch(70.8% 0.043 176.7)
-
Step 500
500
#659589
oklch(63.2% 0.055 177.1)
-
Step 600
600
#4B7F73
oklch(55.6% 0.059 177.6)
-
Step 700
700
#3C6B60
oklch(49.1% 0.055 177.1)
-
Step 800
800
#32574F
oklch(42.6% 0.045 178.7)
-
Step 900
900
#2C4841
oklch(37.7% 0.036 176.7)
-
Step 950
950 (this color)
#1F2F2B
oklch(28.9% 0.023 177.4)
#1F2F2B 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) | #2E2D2B | 0.024 |
| Deuteranopia (no green cones) | #2B2B2B | 0.023 |
| Tritanopia (no blue cones) | #1B2F2E | 0.007 |
| Achromatopsia (no color) | #2C2C2C | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2F2B
#1F2F2B
oklch(28.9% 0.023 177.4)
- #35272B
#35272B
oklch(29.1% 0.022 359.7)
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 #1F2F2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.035
- Gunmetal #293241 ΔE 0.044
- Dark #1B2431 ΔE 0.045
- Pakistan Green #283618 ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.051
- Onyx #343A40 ΔE 0.060
- Midnight Green #073B4C ΔE 0.061
Use #1F2F2B 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.