#1A285B
Closest named color: Marine (#042E60). oklch(29.7% 0.093 268.6), rgb(26, 40, 91).
Aa
White text reads best on this color (14.01:1).
About this color
#1A285B is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.093 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.024 away. White text reads best on it, at 14.01:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.49:1 |
| White text | 14.01:1 |
Values
| HEX | #1A285B |
| RGB | rgb(26, 40, 91) |
| HSL | hsl(227, 56%, 23%) |
| OKLCH | oklch(29.7% 0.093 268.6) |
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 #1A285B | 14.01:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #1A285B | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #1A285B text on white | 14.01:1 | AAA | Lc 100.4 | Preferred for body text |
| #1A285B text on black | 1.49:1 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A7BFFF
oklch(81% 0.095 268.4)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#597DFF
oklch(63.2% 0.197 268.6)
-
Step 600
600
#3C5AFF
oklch(55.5% 0.245 268.6)
-
Step 700
700
#3048DF
oklch(49.1% 0.228 268.6)
-
Step 800
800
#273DB4
oklch(42.7% 0.189 268.5)
-
Step 900
900
#23368E
oklch(37.7% 0.147 268.8)
-
Step 950
950 (this color)
#1A285B
oklch(29.7% 0.093 268.6)
#1A285B 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) | #082F5D | 0.024 |
| Deuteranopia (no green cones) | #00295A | 0.023 |
| Tritanopia (no blue cones) | #00343D | 0.077 |
| Achromatopsia (no color) | #2C2C2C | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A285B
#1A285B
oklch(29.7% 0.093 268.6)
- #392B00
#392B00
oklch(29.7% 0.061 89.4)
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 #1A285B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.024
- Prussian Blue #1D3557 ΔE 0.043
- Marine Blue #01386A ΔE 0.051
- Midnight Blue #191970 ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.058
- Gunmetal #293241 ΔE 0.067
- Dark Blue Grey #1F3B4D ΔE 0.071
Use #1A285B 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.