#1D3353
Closest named color: Prussian Blue (#1D3557). oklch(32% 0.064 257.7), rgb(29, 51, 83).
Aa
White text reads best on this color (12.72:1).
About this color
#1D3353 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.064 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.009 away. White text reads best on it, at 12.72:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.72:1 |
Values
| HEX | #1D3353 |
| RGB | rgb(29, 51, 83) |
| HSL | hsl(216, 48%, 22%) |
| OKLCH | oklch(32% 0.064 257.7) |
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 #1D3353 | 12.72:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #1D3353 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #1D3353 text on white | 12.72:1 | AAA | Lc 98.7 | Preferred for body text |
| #1D3353 text on black | 1.65:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A2C3F2
oklch(81% 0.076 257.2)
-
Step 400
400
#6FA2EB
oklch(70.7% 0.121 257.4)
-
Step 500
500
#4889E5
oklch(63.2% 0.154 257.4)
-
Step 600
600
#2970D3
oklch(55.6% 0.168 257.8)
-
Step 700
700
#1B5DB7
oklch(49% 0.157 257.8)
-
Step 800
800
#194D94
oklch(42.8% 0.129 257.5)
-
Step 900
900
#1B4176
oklch(37.8% 0.1 257.4)
-
Step 950
950 (this color)
#1D3353
oklch(32% 0.064 257.7)
#1D3353 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) | #263554 | 0.014 |
| Deuteranopia (no green cones) | #1E3052 | 0.009 |
| Tritanopia (no blue cones) | #003A3F | 0.054 |
| Achromatopsia (no color) | #333333 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D3353
#1D3353
oklch(32% 0.064 257.7)
- #452E03
#452E03
oklch(32.1% 0.064 77.4)
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 #1D3353, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.009
- Dark Blue Grey #1F3B4D ΔE 0.032
- Gunmetal #293241 ΔE 0.035
- Midnight Green #073B4C ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.035
- Marine #042E60 ΔE 0.038
- Marine Blue #01386A ΔE 0.043
- Oxford Blue #1B263B ΔE 0.055
Use #1D3353 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.