#1E3359
Closest named color: Prussian Blue (#1D3557). oklch(32.4% 0.073 261.4), rgb(30, 51, 89).
Aa
White text reads best on this color (12.55:1).
About this color
#1E3359 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.073 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.008 away. White text reads best on it, at 12.55:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.67:1 |
| White text | 12.55:1 |
Values
| HEX | #1E3359 |
| RGB | rgb(30, 51, 89) |
| HSL | hsl(219, 50%, 23%) |
| OKLCH | oklch(32.4% 0.073 261.4) |
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 #1E3359 | 12.55:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #1E3359 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #1E3359 text on white | 12.55:1 | AAA | Lc 98.3 | Preferred for body text |
| #1E3359 text on black | 1.67:1 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#ADC2E5
oklch(81% 0.055 260.6)
-
Step 400
400
#82A1D8
oklch(70.7% 0.088 261.6)
-
Step 500
500
#6389CD
oklch(63.1% 0.112 261.5)
-
Step 600
600
#4A72BA
oklch(55.7% 0.121 261.3)
-
Step 700
700
#3B5FA0
oklch(49.1% 0.113 261.3)
-
Step 800
800
#314E82
oklch(42.8% 0.093 261.3)
-
Step 900
900 (this color)
#1E3359
oklch(32.4% 0.073 261.4)
-
Step 950
950
#19263D
oklch(26.9% 0.047 261.3)
#1E3359 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) | #22365B | 0.012 |
| Deuteranopia (no green cones) | #1A3158 | 0.009 |
| Tritanopia (no blue cones) | #003C41 | 0.064 |
| Achromatopsia (no color) | #333333 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E3359
#1E3359
oklch(32.4% 0.073 261.4)
- #453000
#453000
oklch(32.5% 0.067 82)
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 #1E3359, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.008
- Marine #042E60 ΔE 0.033
- Marine Blue #01386A ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.038
- Midnight Green #073B4C ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.044
- Gunmetal #293241 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.063
Use #1E3359 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.