#1A327D
Closest named color: Marine Blue (#01386A). oklch(34.9% 0.131 266.1), rgb(26, 50, 125).
Aa
White text reads best on this color (11.69:1).
About this color
#1A327D is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.131 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.041 away. White text reads best on it, at 11.69:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.69:1 |
Values
| HEX | #1A327D |
| RGB | rgb(26, 50, 125) |
| HSL | hsl(225, 66%, 30%) |
| OKLCH | oklch(34.9% 0.131 266.1) |
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 #1A327D | 11.69:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #1A327D | 1.79:1 | Fails | Lc 7.5 | Not readable |
| #1A327D text on white | 11.69:1 | AAA | Lc 96.4 | Preferred for body text |
| #1A327D 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C8D9FE
oklch(88.5% 0.054 265.8)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517FFF
oklch(63.2% 0.197 266)
-
Step 600
600
#3763F0
oklch(55.6% 0.217 266.1)
-
Step 700
700
#2B51D1
oklch(49.2% 0.202 266.1)
-
Step 800
800
#2443A9
oklch(42.7% 0.168 266.3)
-
Step 900
900 (this color)
#1A327D
oklch(34.9% 0.131 266.1)
-
Step 950
950
#13234E
oklch(27% 0.082 265.8)
#1A327D 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) | #003D80 | 0.031 |
| Deuteranopia (no green cones) | #00347C | 0.017 |
| Tritanopia (no blue cones) | #004552 | 0.103 |
| Achromatopsia (no color) | #383838 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A327D
#1A327D
oklch(34.9% 0.131 266.1)
- #4B3700
#4B3700
oklch(35% 0.072 85.8)
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 #1A327D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.041
- Twilight Blue #0A437A ΔE 0.048
- Marine #042E60 ΔE 0.056
- Midnight Blue #191970 ΔE 0.064
- Cobalt #1E488F ΔE 0.067
- Royal #0C1793 ΔE 0.067
- Prussian Blue #1D3557 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.079
Use #1A327D 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.