#1A3662
Closest named color: Prussian Blue (#1D3557). oklch(33.6% 0.085 259.1), rgb(26, 54, 98).
Aa
White text reads best on this color (12.01:1).
About this color
#1A3662 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.085 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.019 away. White text reads best on it, at 12.01:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.74:1 |
| White text | 12.01:1 |
Values
| HEX | #1A3662 |
| RGB | rgb(26, 54, 98) |
| HSL | hsl(217, 58%, 24%) |
| OKLCH | oklch(33.6% 0.085 259.1) |
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 #1A3662 | 12.01:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #1A3662 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #1A3662 text on white | 12.01:1 | AAA | Lc 97.3 | Preferred for body text |
| #1A3662 text on black | 1.74:1 | 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
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A8C2EA
oklch(80.8% 0.064 258.9)
-
Step 400
400
#7AA2E0
oklch(70.8% 0.101 258.9)
-
Step 500
500
#5789D7
oklch(63% 0.13 259)
-
Step 600
600
#3D71C5
oklch(55.5% 0.142 259.6)
-
Step 700
700
#2F5FAA
oklch(49.2% 0.131 259.1)
-
Step 800
800
#274E8A
oklch(42.8% 0.109 258.8)
-
Step 900
900 (this color)
#1A3662
oklch(33.6% 0.085 259.1)
-
Step 950
950
#162640
oklch(26.9% 0.053 259.7)
#1A3662 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) | #213A64 | 0.016 |
| Deuteranopia (no green cones) | #153361 | 0.011 |
| Tritanopia (no blue cones) | #004047 | 0.067 |
| Achromatopsia (no color) | #363636 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A3662
#1A3662
oklch(33.6% 0.085 259.1)
- #4A3200
#4A3200
oklch(33.7% 0.07 79.3)
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 #1A3662, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.019
- Marine Blue #01386A ΔE 0.020
- Marine #042E60 ΔE 0.033
- Dark Blue Grey #1F3B4D ΔE 0.045
- Midnight Green #073B4C ΔE 0.049
- Twilight Blue #0A437A ΔE 0.052
- Gunmetal #293241 ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.060
Use #1A3662 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.