#1E3F82
Closest named color: Twilight Blue (#0A437A). oklch(38.3% 0.12 262.5), rgb(30, 63, 130).
Aa
White text reads best on this color (10.05:1).
About this color
#1E3F82 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.120 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.022 away. White text reads best on it, at 10.05:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #1E3F82 |
| RGB | rgb(30, 63, 130) |
| HSL | hsl(220, 62%, 31%) |
| OKLCH | oklch(38.3% 0.12 262.5) |
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 #1E3F82 | 10.05:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #1E3F82 | 2.08:1 | Fails | Lc 11.0 | Not readable |
| #1E3F82 text on white | 10.05:1 | AAA | Lc 93.0 | Preferred for body text |
| #1E3F82 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
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A2C1FB
oklch(80.9% 0.089 262.7)
-
Step 400
400
#6F9EFA
oklch(70.6% 0.145 262.7)
-
Step 500
500
#4A83F7
oklch(63.1% 0.184 262.6)
-
Step 600
600
#2D69E6
oklch(55.6% 0.2 262.5)
-
Step 700
700
#2057C8
oklch(49.2% 0.186 262.4)
-
Step 800
800
#1C48A1
oklch(42.8% 0.153 262.3)
-
Step 900
900 (this color)
#1E3F82
oklch(38.3% 0.12 262.5)
-
Step 950
950
#11244B
oklch(26.9% 0.077 262.8)
#1E3F82 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) | #174784 | 0.022 |
| Deuteranopia (no green cones) | #003E81 | 0.019 |
| Tritanopia (no blue cones) | #004F5A | 0.095 |
| Achromatopsia (no color) | #424242 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E3F82
#1E3F82
oklch(38.3% 0.12 262.5)
- #583E00
#583E00
oklch(38.3% 0.079 81.8)
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 #1E3F82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.022
- Cobalt #1E488F ΔE 0.032
- Light Navy #155084 ΔE 0.049
- Marine Blue #01386A ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.059
- Dusk Blue #26538D ΔE 0.060
- Deep Sea Blue #015482 ΔE 0.061
- Blueberry #464196 ΔE 0.064
Use #1E3F82 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.