#1D3545
Closest named color: Gunmetal (#293241). oklch(31.7% 0.042 239.1), rgb(29, 53, 69).
Aa
White text reads best on this color (12.74:1).
About this color
#1D3545 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.042 and its hue 239°. 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 12.74:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.64:1 |
| White text | 12.74:1 |
Values
| HEX | #1D3545 |
| RGB | rgb(29, 53, 69) |
| HSL | hsl(204, 41%, 19%) |
| OKLCH | oklch(31.7% 0.042 239.1) |
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 #1D3545 | 12.74:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #1D3545 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #1D3545 text on white | 12.74:1 | AAA | Lc 98.7 | Preferred for body text |
| #1D3545 text on black | 1.64:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A4C6DD
oklch(80.9% 0.049 237.8)
-
Step 400
400
#72A8CD
oklch(70.8% 0.079 239.3)
-
Step 500
500
#4991C0
oklch(63% 0.101 239.7)
-
Step 600
600
#267BAC
oklch(55.6% 0.109 239)
-
Step 700
700
#176794
oklch(49% 0.102 239.6)
-
Step 800
800
#175478
oklch(42.6% 0.085 239.7)
-
Step 900
900
#1B4661
oklch(37.7% 0.066 239.5)
-
Step 950
950 (this color)
#1D3545
oklch(31.7% 0.042 239.1)
#1D3545 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) | #2E3546 | 0.024 |
| Deuteranopia (no green cones) | #283145 | 0.019 |
| Tritanopia (no blue cones) | #07393A | 0.034 |
| Achromatopsia (no color) | #323232 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D3545
#1D3545
oklch(31.7% 0.042 239.1)
- #422D1C
#422D1C
oklch(31.7% 0.042 59.5)
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 #1D3545, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.018
- Dark Blue Grey #1F3B4D ΔE 0.022
- Midnight Green #073B4C ΔE 0.024
- Space Cadet #2B2D42 ΔE 0.030
- Prussian Blue #1D3557 ΔE 0.033
- Onyx #343A40 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.051
- Charcoal #264653 ΔE 0.059
Use #1D3545 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.