#1D3082
Closest named color: Marine Blue (#01386A). oklch(35.1% 0.14 268.1), rgb(29, 48, 130).
Aa
White text reads best on this color (11.68:1).
About this color
#1D3082 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.140 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.051 away. White text reads best on it, at 11.68:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.68:1 |
Values
| HEX | #1D3082 |
| RGB | rgb(29, 48, 130) |
| HSL | hsl(229, 64%, 31%) |
| OKLCH | oklch(35.1% 0.14 268.1) |
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 #1D3082 | 11.68:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #1D3082 | 1.79:1 | Fails | Lc 7.6 | Not readable |
| #1D3082 text on white | 11.68:1 | AAA | Lc 96.3 | Preferred for body text |
| #1D3082 text on black | 1.79:1 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#789BFF
oklch(70.8% 0.152 267.9)
-
Step 500
500
#577DFF
oklch(63.1% 0.197 268)
-
Step 600
600
#3C5EF9
oklch(55.7% 0.233 268)
-
Step 700
700
#304CD9
oklch(49.2% 0.216 268.1)
-
Step 800
800
#273FAF
oklch(42.6% 0.18 268.1)
-
Step 900
900 (this color)
#1D3082
oklch(35.1% 0.14 268.1)
-
Step 950
950
#142251
oklch(27.1% 0.088 267.6)
#1D3082 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) | #003D85 | 0.035 |
| Deuteranopia (no green cones) | #003480 | 0.021 |
| Tritanopia (no blue cones) | #004554 | 0.110 |
| Achromatopsia (no color) | #383838 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D3082
#1D3082
oklch(35.1% 0.14 268.1)
- #4A3800
#4A3800
oklch(35.1% 0.072 88.5)
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 #1D3082, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.051
- Twilight Blue #0A437A ΔE 0.054
- Royal #0C1793 ΔE 0.060
- Midnight Blue #191970 ΔE 0.064
- Marine #042E60 ΔE 0.064
- Cobalt #1E488F ΔE 0.067
- Sapphire #2138AB ΔE 0.072
- Dark Slate Blue #483D8B ΔE 0.077
Use #1D3082 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.