#1E3E85
Closest named color: Twilight Blue (#0A437A). oklch(38.4% 0.125 263.4), rgb(30, 62, 133).
Aa
White text reads best on this color (10.08:1).
About this color
#1E3E85 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.125 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.028 away. White text reads best on it, at 10.08:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.08:1 |
| White text | 10.08:1 |
Values
| HEX | #1E3E85 |
| RGB | rgb(30, 62, 133) |
| HSL | hsl(221, 63%, 32%) |
| OKLCH | oklch(38.4% 0.125 263.4) |
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 #1E3E85 | 10.08:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #1E3E85 | 2.08:1 | Fails | Lc 10.9 | Not readable |
| #1E3E85 text on white | 10.08:1 | AAA | Lc 93.0 | Preferred for body text |
| #1E3E85 text on black | 2.08:1 | Fails | Lc -9.5 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C7DAFD
oklch(88.5% 0.053 262.7)
-
Step 300
300
#A1C1FE
oklch(81% 0.094 263)
-
Step 400
400
#6F9DFE
oklch(70.6% 0.151 263.8)
-
Step 500
500
#4981FC
oklch(63% 0.193 263.5)
-
Step 600
600
#2D67EB
oklch(55.6% 0.209 263.3)
-
Step 700
700
#2154CC
oklch(49% 0.194 263.5)
-
Step 800
800
#1D46A5
oklch(42.7% 0.16 263.5)
-
Step 900
900 (this color)
#1E3E85
oklch(38.4% 0.125 263.4)
-
Step 950
950
#11244D
oklch(27.1% 0.08 263.3)
#1E3E85 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) | #0F4788 | 0.025 |
| Deuteranopia (no green cones) | #003D84 | 0.019 |
| Tritanopia (no blue cones) | #004F5B | 0.099 |
| Achromatopsia (no color) | #424242 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E3E85
#1E3E85
oklch(38.4% 0.125 263.4)
- #573F00
#573F00
oklch(38.4% 0.079 84.1)
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 #1E3E85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.028
- Cobalt #1E488F ΔE 0.031
- Light Navy #155084 ΔE 0.052
- Marine Blue #01386A ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.058
- Blueberry #464196 ΔE 0.062
- Dusk Blue #26538D ΔE 0.062
- Sapphire #2138AB ΔE 0.065
Use #1E3E85 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.