#1D2F7D
Closest named color: Marine Blue (#01386A). oklch(34.4% 0.134 268.4), rgb(29, 47, 125).
Aa
White text reads best on this color (11.96:1).
About this color
#1D2F7D is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.134 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.046 away. White text reads best on it, at 11.96:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.75:1 |
| White text | 11.96:1 |
Values
| HEX | #1D2F7D |
| RGB | rgb(29, 47, 125) |
| HSL | hsl(229, 62%, 30%) |
| OKLCH | oklch(34.4% 0.134 268.4) |
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 #1D2F7D | 11.96:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #1D2F7D | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #1D2F7D text on white | 11.96:1 | AAA | Lc 96.9 | Preferred for body text |
| #1D2F7D text on black | 1.75:1 | 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
#E2EAFE
oklch(93.7% 0.028 268.4)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A7BFFF
oklch(81% 0.095 268.4)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#587DFF
oklch(63.1% 0.197 268.3)
-
Step 600
600
#3F60F3
oklch(55.6% 0.223 268.3)
-
Step 700
700
#324ED4
oklch(49.2% 0.207 268.3)
-
Step 800
800
#2941AB
oklch(42.7% 0.172 268.2)
-
Step 900
900 (this color)
#1D2F7D
oklch(34.4% 0.134 268.4)
-
Step 950
950
#15224F
oklch(27% 0.084 268.2)
#1D2F7D 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) | #003B80 | 0.034 |
| Deuteranopia (no green cones) | #00327B | 0.022 |
| Tritanopia (no blue cones) | #004351 | 0.106 |
| Achromatopsia (no color) | #373737 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D2F7D
#1D2F7D
oklch(34.4% 0.134 268.4)
- #483600
#483600
oklch(34.3% 0.07 87.9)
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 #1D2F7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.046
- Twilight Blue #0A437A ΔE 0.055
- Marine #042E60 ΔE 0.056
- Midnight Blue #191970 ΔE 0.058
- Royal #0C1793 ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.070
- Cobalt #1E488F ΔE 0.073
- Sapphire #2138AB ΔE 0.081
Use #1D2F7D 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.