#1D3463
Closest named color: Prussian Blue (#1D3557). oklch(33.4% 0.088 262.9), rgb(29, 52, 99).
Aa
White text reads best on this color (12.18:1).
About this color
#1D3463 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.088 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.022 away. White text reads best on it, at 12.18:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.72:1 |
| White text | 12.18:1 |
Values
| HEX | #1D3463 |
| RGB | rgb(29, 52, 99) |
| HSL | hsl(220, 55%, 25%) |
| OKLCH | oklch(33.4% 0.088 262.9) |
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 #1D3463 | 12.18:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #1D3463 | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #1D3463 text on white | 12.18:1 | AAA | Lc 97.6 | Preferred for body text |
| #1D3463 text on black | 1.72:1 | 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 900.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF2
oklch(88.5% 0.036 261.3)
-
Step 300
300
#AAC1EC
oklch(80.8% 0.066 262.8)
-
Step 400
400
#7DA0E3
oklch(70.7% 0.106 262.8)
-
Step 500
500
#5D87DB
oklch(63.1% 0.135 263)
-
Step 600
600
#436FC8
oklch(55.6% 0.147 262.8)
-
Step 700
700
#355CAD
oklch(49% 0.137 263)
-
Step 800
800
#2C4C8C
oklch(42.7% 0.113 262.6)
-
Step 900
900 (this color)
#1D3463
oklch(33.4% 0.088 262.9)
-
Step 950
950
#182642
oklch(27.2% 0.056 263.1)
#1D3463 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) | #1D3965 | 0.015 |
| Deuteranopia (no green cones) | #113262 | 0.014 |
| Tritanopia (no blue cones) | #003F46 | 0.073 |
| Achromatopsia (no color) | #353535 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D3463
#1D3463
oklch(33.4% 0.088 262.9)
- #473200
#473200
oklch(33.3% 0.068 82.8)
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 #1D3463, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Marine Blue #01386A ΔE 0.023
- Marine #042E60 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.050
- Midnight Green #073B4C ΔE 0.054
- Twilight Blue #0A437A ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.060
- Gunmetal #293241 ΔE 0.061
Use #1D3463 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.