#1A305E
Closest named color: Marine (#042E60). oklch(31.8% 0.087 263.1), rgb(26, 48, 94).
Aa
White text reads best on this color (12.89:1).
About this color
#1A305E is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.087 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.021 away. White text reads best on it, at 12.89:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.62:1 |
| White text | 12.89:1 |
Values
| HEX | #1A305E |
| RGB | rgb(26, 48, 94) |
| HSL | hsl(221, 57%, 24%) |
| OKLCH | oklch(31.8% 0.087 263.1) |
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 #1A305E | 12.89:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #1A305E | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #1A305E text on white | 12.89:1 | AAA | Lc 98.8 | Preferred for body text |
| #1A305E text on black | 1.62:1 | 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 950.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6D9DFF
oklch(70.6% 0.153 263.3)
-
Step 500
500
#4681FF
oklch(63.1% 0.198 263.1)
-
Step 600
600
#2464F6
oklch(55.7% 0.228 263.1)
-
Step 700
700
#1851D6
oklch(49.1% 0.212 263.2)
-
Step 800
800
#1644AD
oklch(42.8% 0.175 263.1)
-
Step 900
900
#183B89
oklch(37.8% 0.137 263.2)
-
Step 950
950 (this color)
#1A305E
oklch(31.8% 0.087 263.1)
#1A305E 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) | #193560 | 0.015 |
| Deuteranopia (no green cones) | #0C2F5D | 0.014 |
| Tritanopia (no blue cones) | #003B42 | 0.072 |
| Achromatopsia (no color) | #323232 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A305E
#1A305E
oklch(31.8% 0.087 263.1)
- #422F00
#422F00
oklch(31.9% 0.065 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 #1A305E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.021
- Prussian Blue #1D3557 ΔE 0.022
- Marine Blue #01386A ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.053
- Midnight Green #073B4C ΔE 0.055
- Gunmetal #293241 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.066
Use #1A305E 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.