#1D343F
Closest named color: Gunmetal (#293241). oklch(31.1% 0.035 230), rgb(29, 52, 63).
Aa
White text reads best on this color (13.00:1).
About this color
#1D343F is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.035 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.018 away. White text reads best on it, at 13.00:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.61:1 |
| White text | 13.00:1 |
Values
| HEX | #1D343F |
| RGB | rgb(29, 52, 63) |
| HSL | hsl(199, 37%, 18%) |
| OKLCH | oklch(31.1% 0.035 230) |
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 #1D343F | 13.00:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #1D343F | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #1D343F text on white | 13.00:1 | AAA | Lc 99.2 | Preferred for body text |
| #1D343F text on black | 1.61:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A6C6D7
oklch(80.9% 0.042 231.1)
-
Step 400
400
#75A9C2
oklch(70.7% 0.066 229.5)
-
Step 500
500
#4E93B3
oklch(63.1% 0.085 230.2)
-
Step 600
600
#2D7D9F
oklch(55.6% 0.092 230.1)
-
Step 700
700
#1E6988
oklch(49% 0.086 230.3)
-
Step 800
800
#1C566E
oklch(42.7% 0.071 229.4)
-
Step 900
900
#1E4759
oklch(37.7% 0.055 229.4)
-
Step 950
950 (this color)
#1D343F
oklch(31.1% 0.035 230)
#1D343F 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) | #2E3340 | 0.024 |
| Deuteranopia (no green cones) | #2A2F3F | 0.024 |
| Tritanopia (no blue cones) | #0D3738 | 0.025 |
| Achromatopsia (no color) | #313131 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D343F
#1D343F
oklch(31.1% 0.035 230)
- #3F2B20
#3F2B20
oklch(31% 0.035 49.8)
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 #1D343F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.018
- Midnight Green #073B4C ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.031
- Onyx #343A40 ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.048
- Jet #212529 ΔE 0.056
Use #1D343F 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.