#01327E
Closest named color: Marine Blue (#01386A). oklch(34.2% 0.138 260), rgb(1, 50, 126).
Aa
White text reads best on this color (11.93:1).
About this color
#01327E is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.138 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.040 away. White text reads best on it, at 11.93:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.75:1 |
| White text | 11.93:1 |
Values
| HEX | #01327E |
| RGB | rgb(1, 50, 126) |
| HSL | hsl(216, 98%, 25%) |
| OKLCH | oklch(34.2% 0.138 260) |
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 #01327E | 11.93:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #01327E | 1.75:1 | Fails | Lc 7.3 | Not readable |
| #01327E text on white | 11.93:1 | AAA | Lc 96.6 | Preferred for body text |
| #01327E text on black | 1.75:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C4DAFF
oklch(88.4% 0.057 260.8)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#669FFF
oklch(70.7% 0.154 260.3)
-
Step 500
500
#3883FF
oklch(63% 0.199 260)
-
Step 600
600
#0067F4
oklch(55.6% 0.226 260)
-
Step 700
700
#0056CF
oklch(49.1% 0.2 260)
-
Step 800
800
#0046AC
oklch(42.7% 0.175 260)
-
Step 900
900 (this color)
#01327E
oklch(34.2% 0.138 260)
-
Step 950
950
#092450
oklch(27% 0.087 259.9)
#01327E 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) | #003C81 | 0.028 |
| Deuteranopia (no green cones) | #00327D | 0.002 |
| Tritanopia (no blue cones) | #004653 | 0.105 |
| Achromatopsia (no color) | #373737 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01327E
#01327E
oklch(34.2% 0.138 260)
- #4C3400
#4C3400
oklch(34.4% 0.071 80.2)
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 #01327E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.040
- Twilight Blue #0A437A ΔE 0.051
- Marine #042E60 ΔE 0.053
- Royal #0C1793 ΔE 0.061
- Midnight Blue #191970 ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.072
- Cobalt #1E488F ΔE 0.073
- Sapphire #2138AB ΔE 0.083
Use #01327E 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.