#1D356F
Closest named color: Marine Blue (#01386A). oklch(34.5% 0.105 264.6), rgb(29, 53, 111).
Aa
White text reads best on this color (11.72:1).
About this color
#1D356F is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.105 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.023 away. White text reads best on it, at 11.72:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.72:1 |
Values
| HEX | #1D356F |
| RGB | rgb(29, 53, 111) |
| HSL | hsl(222, 59%, 27%) |
| OKLCH | oklch(34.5% 0.105 264.6) |
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 #1D356F | 11.72:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #1D356F | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #1D356F text on white | 11.72:1 | AAA | Lc 96.6 | Preferred for body text |
| #1D356F 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F7
oklch(88.4% 0.044 265.6)
-
Step 300
300
#A7C1F4
oklch(80.9% 0.078 263.6)
-
Step 400
400
#799EEF
oklch(70.6% 0.126 264.7)
-
Step 500
500
#5884EA
oklch(63.1% 0.161 264.7)
-
Step 600
600
#3E6BD8
oklch(55.6% 0.175 264.5)
-
Step 700
700
#3158BC
oklch(49.1% 0.164 264.9)
-
Step 800
800
#294998
oklch(42.8% 0.135 264.7)
-
Step 900
900 (this color)
#1D356F
oklch(34.5% 0.105 264.6)
-
Step 950
950
#162547
oklch(27.1% 0.066 264.5)
#1D356F 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) | #143C71 | 0.020 |
| Deuteranopia (no green cones) | #00346E | 0.022 |
| Tritanopia (no blue cones) | #00434C | 0.086 |
| Achromatopsia (no color) | #383838 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D356F
#1D356F
oklch(34.5% 0.105 264.6)
- #4A3600
#4A3600
oklch(34.6% 0.071 85.5)
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 #1D356F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.023
- Marine #042E60 ΔE 0.041
- Twilight Blue #0A437A ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.067
- Midnight Blue #191970 ΔE 0.071
- Midnight Green #073B4C ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.072
Use #1D356F 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.