#1A3080
Closest named color: Marine Blue (#01386A). oklch(34.7% 0.138 267), rgb(26, 48, 128).
Aa
White text reads best on this color (11.80:1).
About this color
#1A3080 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.138 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.048 away. White text reads best on it, at 11.80:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.77:1 |
| White text | 11.80:1 |
Values
| HEX | #1A3080 |
| RGB | rgb(26, 48, 128) |
| HSL | hsl(227, 66%, 30%) |
| OKLCH | oklch(34.7% 0.138 267) |
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 #1A3080 | 11.80:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #1A3080 | 1.77:1 | Fails | Lc 7.3 | Not readable |
| #1A3080 text on white | 11.80:1 | AAA | Lc 96.5 | Preferred for body text |
| #1A3080 text on black | 1.77:1 | 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
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500
#547EFF
oklch(63.1% 0.197 267)
-
Step 600
600
#3860F7
oklch(55.7% 0.229 266.9)
-
Step 700
700
#2C4DD7
oklch(49% 0.214 267.1)
-
Step 800
800
#2441AE
oklch(42.8% 0.177 266.9)
-
Step 900
900 (this color)
#1A3080
oklch(34.7% 0.138 267)
-
Step 950
950
#132250
oklch(26.9% 0.087 266.8)
#1A3080 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) | #003C83 | 0.032 |
| Deuteranopia (no green cones) | #00337E | 0.018 |
| Tritanopia (no blue cones) | #004453 | 0.107 |
| Achromatopsia (no color) | #383838 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A3080
#1A3080
oklch(34.7% 0.138 267)
- #4A3700
#4A3700
oklch(34.8% 0.071 87)
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 #1A3080, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.048
- Twilight Blue #0A437A ΔE 0.054
- Royal #0C1793 ΔE 0.060
- Marine #042E60 ΔE 0.060
- Midnight Blue #191970 ΔE 0.061
- Cobalt #1E488F ΔE 0.069
- Prussian Blue #1D3557 ΔE 0.074
- Sapphire #2138AB ΔE 0.076
Use #1A3080 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.