#1F2D41
Closest named color: Space Cadet (#2B2D42). oklch(29.4% 0.041 257.3), rgb(31, 45, 65).
Aa
White text reads best on this color (13.90:1).
About this color
#1F2D41 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.041 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.019 away. White text reads best on it, at 13.90:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.50:1 |
| White text | 13.90:1 |
Values
| HEX | #1F2D41 |
| RGB | rgb(31, 45, 65) |
| HSL | hsl(215, 35%, 19%) |
| OKLCH | oklch(29.4% 0.041 257.3) |
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 #1F2D41 | 13.90:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #1F2D41 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #1F2D41 text on white | 13.90:1 | AAA | Lc 100.5 | Preferred for body text |
| #1F2D41 text on black | 1.50:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ADC2E1
oklch(80.8% 0.05 258)
-
Step 400
400
#82A3D2
oklch(70.8% 0.078 257.2)
-
Step 500
500
#628BC6
oklch(63.2% 0.1 257.5)
-
Step 600
600
#4874B2
oklch(55.6% 0.109 257.1)
-
Step 700
700
#3A6199
oklch(49.1% 0.101 257.5)
-
Step 800
800
#304F7C
oklch(42.6% 0.084 257.7)
-
Step 900
900
#2B4264
oklch(37.7% 0.065 258)
-
Step 950
950 (this color)
#1F2D41
oklch(29.4% 0.041 257.3)
#1F2D41 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) | #252E42 | 0.010 |
| Deuteranopia (no green cones) | #212B41 | 0.007 |
| Tritanopia (no blue cones) | #113134 | 0.036 |
| Achromatopsia (no color) | #2C2C2C | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2D41
#1F2D41
oklch(29.4% 0.041 257.3)
- #382A13
#382A13
oklch(29.5% 0.042 78.4)
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 #1F2D41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.019
- Gunmetal #293241 ΔE 0.024
- Oxford Blue #1B263B ΔE 0.026
- Dark #1B2431 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.042
- Jet #212529 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.047
- Midnight Green #073B4C ΔE 0.047
Use #1F2D41 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.