#1E3863
Closest named color: Prussian Blue (#1D3557). oklch(34.4% 0.082 259.9), rgb(30, 56, 99).
Aa
White text reads best on this color (11.65:1).
About this color
#1E3863 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.082 and its hue 260°. 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 11.65:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.80:1 |
| White text | 11.65:1 |
Values
| HEX | #1E3863 |
| RGB | rgb(30, 56, 99) |
| HSL | hsl(217, 53%, 25%) |
| OKLCH | oklch(34.4% 0.082 259.9) |
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 #1E3863 | 11.65:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #1E3863 | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #1E3863 text on white | 11.65:1 | AAA | Lc 96.6 | Preferred for body text |
| #1E3863 text on black | 1.80:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#AAC2E9
oklch(80.9% 0.061 260.1)
-
Step 400
400
#7CA1DE
oklch(70.6% 0.099 260.1)
-
Step 500
500
#5B89D5
oklch(63.1% 0.126 260)
-
Step 600
600
#4071C2
oklch(55.5% 0.137 259.9)
-
Step 700
700
#325FA8
oklch(49.2% 0.127 259.6)
-
Step 800
800
#2A4E88
oklch(42.8% 0.105 259.5)
-
Step 900
900 (this color)
#1E3863
oklch(34.4% 0.082 259.9)
-
Step 950
950
#172640
oklch(27% 0.053 260.8)
#1E3863 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) | #243C65 | 0.015 |
| Deuteranopia (no green cones) | #1A3562 | 0.011 |
| Tritanopia (no blue cones) | #004248 | 0.068 |
| Achromatopsia (no color) | #383838 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E3863
#1E3863
oklch(34.4% 0.082 259.9)
- #4C3400
#4C3400
oklch(34.4% 0.071 80.2)
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 #1E3863, 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 0.041
- Dark Blue Grey #1F3B4D ΔE 0.043
- Twilight Blue #0A437A ΔE 0.047
- Midnight Green #073B4C ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.053
- Gunmetal #293241 ΔE 0.060
Use #1E3863 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.