#1F2D39
Closest named color: Space Cadet (#2B2D42). oklch(29% 0.029 244.9), rgb(31, 45, 57).
Aa
White text reads best on this color (14.06:1).
About this color
#1F2D39 is a dark close to neutral grey. In OKLCH its lightness is 29%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Space Cadet (#2B2D42), ΔE 0.026 away. White text reads best on it, at 14.06:1.
| Hue family | Neutrals |
| Lightness | dark (29%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.49:1 |
| White text | 14.06:1 |
Values
| HEX | #1F2D39 |
| RGB | rgb(31, 45, 57) |
| HSL | hsl(208, 30%, 17%) |
| OKLCH | oklch(29% 0.029 244.9) |
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 #1F2D39 | 14.06:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #1F2D39 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #1F2D39 text on white | 14.06:1 | AAA | Lc 100.7 | Preferred for body text |
| #1F2D39 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AFC4D6
oklch(81% 0.034 244)
-
Step 400
400
#84A5C1
oklch(70.7% 0.055 244.3)
-
Step 500
500
#658EB2
oklch(63.1% 0.071 245.7)
-
Step 600
600
#4B789D
oklch(55.6% 0.076 244.6)
-
Step 700
700
#3C6587
oklch(49.2% 0.072 245)
-
Step 800
800
#32526D
oklch(42.6% 0.059 245.2)
-
Step 900
900
#2C4459
oklch(37.6% 0.047 245.9)
-
Step 950
950 (this color)
#1F2D39
oklch(29% 0.029 244.9)
#1F2D39 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) | #282D3A | 0.014 |
| Deuteranopia (no green cones) | #252A39 | 0.013 |
| Tritanopia (no blue cones) | #163031 | 0.024 |
| Achromatopsia (no color) | #2B2B2B | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2D39
#1F2D39
oklch(29% 0.029 244.9)
- #36281C
#36281C
oklch(29% 0.029 61.9)
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 #1F2D39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.026
- Gunmetal #293241 ΔE 0.027
- Oxford Blue #1B263B ΔE 0.027
- Dark #1B2431 ΔE 0.033
- Jet #212529 ΔE 0.034
- Midnight Green #073B4C ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.052
- Prussian Blue #1D3557 ΔE 0.055
Use #1F2D39 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.