#1A316C
Closest named color: Marine Blue (#01386A). oklch(33.2% 0.107 265), rgb(26, 49, 108).
Aa
White text reads best on this color (12.35:1).
About this color
#1A316C is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.107 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.025 away. White text reads best on it, at 12.35:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.69:1 |
| White text | 12.35:1 |
Values
| HEX | #1A316C |
| RGB | rgb(26, 49, 108) |
| HSL | hsl(223, 61%, 26%) |
| OKLCH | oklch(33.2% 0.107 265) |
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 #1A316C | 12.35:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #1A316C | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #1A316C text on white | 12.35:1 | AAA | Lc 97.8 | Preferred for body text |
| #1A316C text on black | 1.69:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F8
oklch(88.5% 0.045 266.2)
-
Step 300
300
#A7C0F5
oklch(80.8% 0.08 265)
-
Step 400
400
#799EF1
oklch(70.7% 0.129 265)
-
Step 500
500
#5883EC
oklch(63.1% 0.165 265.2)
-
Step 600
600
#3F6ADA
oklch(55.6% 0.178 265.2)
-
Step 700
700
#3158BD
oklch(49.1% 0.165 264.9)
-
Step 800
800
#294899
oklch(42.6% 0.138 265.2)
-
Step 900
900 (this color)
#1A316C
oklch(33.2% 0.107 265)
-
Step 950
950
#162447
oklch(26.9% 0.068 265.6)
#1A316C 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) | #0A386E | 0.021 |
| Deuteranopia (no green cones) | #00316B | 0.020 |
| Tritanopia (no blue cones) | #003F49 | 0.086 |
| Achromatopsia (no color) | #353535 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A316C
#1A316C
oklch(33.2% 0.107 265)
- #463200
#463200
oklch(33.1% 0.068 84.1)
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 #1A316C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.025
- Marine #042E60 ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.041
- Twilight Blue #0A437A ΔE 0.054
- Midnight Blue #191970 ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.069
- Midnight Green #073B4C ΔE 0.072
- Space Cadet #2B2D42 ΔE 0.076
Use #1A316C 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.