#1A3768
Closest named color: Marine Blue (#01386A). oklch(34.3% 0.093 260.2), rgb(26, 55, 104).
Aa
White text reads best on this color (11.72:1).
About this color
#1A3768 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.093 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.016 away. White text reads best on it, at 11.72:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.72:1 |
Values
| HEX | #1A3768 |
| RGB | rgb(26, 55, 104) |
| HSL | hsl(218, 60%, 25%) |
| OKLCH | oklch(34.3% 0.093 260.2) |
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 #1A3768 | 11.72:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #1A3768 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #1A3768 text on white | 11.72:1 | AAA | Lc 96.7 | Preferred for body text |
| #1A3768 text on black | 1.79:1 | 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
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2EE
oklch(80.9% 0.069 260.1)
-
Step 400
400
#78A1E6
oklch(70.7% 0.111 260.5)
-
Step 500
500
#5488DE
oklch(63.1% 0.142 259.9)
-
Step 600
600
#3970CC
oklch(55.6% 0.154 260.1)
-
Step 700
700
#2C5DB1
oklch(49.1% 0.144 260.4)
-
Step 800
800
#254C8F
oklch(42.6% 0.12 260.4)
-
Step 900
900 (this color)
#1A3768
oklch(34.3% 0.093 260.2)
-
Step 950
950
#152643
oklch(27% 0.059 260.5)
#1A3768 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) | #1F3C6A | 0.017 |
| Deuteranopia (no green cones) | #103567 | 0.012 |
| Tritanopia (no blue cones) | #00424A | 0.073 |
| Achromatopsia (no color) | #383838 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A3768
#1A3768
oklch(34.3% 0.093 260.2)
- #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 #1A3768, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.016
- Prussian Blue #1D3557 ΔE 0.030
- Marine #042E60 ΔE 0.037
- Twilight Blue #0A437A ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.053
- Midnight Green #073B4C ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.061
- Gunmetal #293241 ΔE 0.069
Use #1A3768 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.