#1A3274
Closest named color: Marine Blue (#01386A). oklch(34.1% 0.118 265.4), rgb(26, 50, 116).
Aa
White text reads best on this color (11.98:1).
About this color
#1A3274 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.118 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.030 away. White text reads best on it, at 11.98:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.75:1 |
| White text | 11.98:1 |
Values
| HEX | #1A3274 |
| RGB | rgb(26, 50, 116) |
| HSL | hsl(224, 63%, 28%) |
| OKLCH | oklch(34.1% 0.118 265.4) |
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 #1A3274 | 11.98:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #1A3274 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #1A3274 text on white | 11.98:1 | AAA | Lc 97.0 | Preferred for body text |
| #1A3274 text on black | 1.75:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A5C0FA
oklch(80.9% 0.088 265.1)
-
Step 400
400
#769DF8
oklch(70.7% 0.141 265.4)
-
Step 500
500
#5481F5
oklch(63% 0.18 265.6)
-
Step 600
600
#3A67E4
oklch(55.5% 0.197 265.4)
-
Step 700
700
#2D55C6
oklch(49.1% 0.182 265.3)
-
Step 800
800
#2646A0
oklch(42.6% 0.151 265.5)
-
Step 900
900 (this color)
#1A3274
oklch(34.1% 0.118 265.4)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#1A3274 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) | #003B76 | 0.027 |
| Deuteranopia (no green cones) | #003373 | 0.018 |
| Tritanopia (no blue cones) | #00424D | 0.094 |
| Achromatopsia (no color) | #373737 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A3274
#1A3274
oklch(34.1% 0.118 265.4)
- #483500
#483500
oklch(34.1% 0.07 86.3)
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 #1A3274, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.030
- Marine #042E60 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.053
- Midnight Blue #191970 ΔE 0.061
- Cobalt #1E488F ΔE 0.074
- Royal #0C1793 ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.079
Use #1A3274 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.