#1C366A
Closest named color: Marine Blue (#01386A). oklch(34.3% 0.096 262.5), rgb(28, 54, 106).
Aa
White text reads best on this color (11.76:1).
About this color
#1C366A is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.096 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.019 away. White text reads best on it, at 11.76:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.78:1 |
| White text | 11.76:1 |
Values
| HEX | #1C366A |
| RGB | rgb(28, 54, 106) |
| HSL | hsl(220, 58%, 26%) |
| OKLCH | oklch(34.3% 0.096 262.5) |
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 #1C366A | 11.76:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #1C366A | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #1C366A text on white | 11.76:1 | AAA | Lc 96.7 | Preferred for body text |
| #1C366A text on black | 1.78:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A8C1F0
oklch(80.9% 0.072 262.9)
-
Step 400
400
#79A0E9
oklch(70.7% 0.116 262.3)
-
Step 500
500
#5786E2
oklch(63% 0.148 262.5)
-
Step 600
600
#3D6ED0
oklch(55.6% 0.161 262.4)
-
Step 700
700
#2F5BB4
oklch(49% 0.15 262.5)
-
Step 800
800
#284B92
oklch(42.7% 0.124 262.6)
-
Step 900
900 (this color)
#1C366A
oklch(34.3% 0.096 262.5)
-
Step 950
950
#162544
oklch(26.9% 0.061 263.4)
#1C366A 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) | #1B3C6C | 0.018 |
| Deuteranopia (no green cones) | #0A3469 | 0.017 |
| Tritanopia (no blue cones) | #00424A | 0.078 |
| Achromatopsia (no color) | #383838 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C366A
#1C366A
oklch(34.3% 0.096 262.5)
- #4B3400
#4B3400
oklch(34.3% 0.071 81.3)
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 #1C366A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.019
- Prussian Blue #1D3557 ΔE 0.033
- Marine #042E60 ΔE 0.038
- Twilight Blue #0A437A ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.057
- Midnight Green #073B4C ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.072
Use #1C366A 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.