#1E3760
Closest named color: Prussian Blue (#1D3557). oklch(33.9% 0.079 259.8), rgb(30, 55, 96).
Aa
White text reads best on this color (11.86:1).
About this color
#1E3760 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.079 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.016 away. White text reads best on it, at 11.86:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.77:1 |
| White text | 11.86:1 |
Values
| HEX | #1E3760 |
| RGB | rgb(30, 55, 96) |
| HSL | hsl(217, 52%, 25%) |
| OKLCH | oklch(33.9% 0.079 259.8) |
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 #1E3760 | 11.86:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #1E3760 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #1E3760 text on white | 11.86:1 | AAA | Lc 97.0 | Preferred for body text |
| #1E3760 text on black | 1.77:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ABC2E7
oklch(80.9% 0.058 259.9)
-
Step 400
400
#7EA2DC
oklch(70.8% 0.094 259.7)
-
Step 500
500
#5D89D2
oklch(63.1% 0.121 260.1)
-
Step 600
600
#4372BF
oklch(55.6% 0.131 259.8)
-
Step 700
700
#345FA5
oklch(49.1% 0.122 259.7)
-
Step 800
800
#2C4E86
oklch(42.8% 0.101 259.9)
-
Step 900
900 (this color)
#1E3760
oklch(33.9% 0.079 259.8)
-
Step 950
950
#17263F
oklch(26.9% 0.051 260.2)
#1E3760 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) | #253B62 | 0.016 |
| Deuteranopia (no green cones) | #1B345F | 0.010 |
| Tritanopia (no blue cones) | #004046 | 0.065 |
| Achromatopsia (no color) | #373737 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E3760
#1E3760
oklch(33.9% 0.079 259.8)
- #4B3300
#4B3300
oklch(34% 0.071 79.7)
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 #1E3760, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.016
- Marine Blue #01386A ΔE 0.026
- Marine #042E60 ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.039
- Midnight Green #073B4C ΔE 0.046
- Twilight Blue #0A437A ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.054
- Gunmetal #293241 ΔE 0.055
Use #1E3760 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.