#1D334D
Closest named color: Prussian Blue (#1D3557). oklch(31.6% 0.055 253.5), rgb(29, 51, 77).
Aa
White text reads best on this color (12.86:1).
About this color
#1D334D is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.055 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.018 away. White text reads best on it, at 12.86:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.63:1 |
| White text | 12.86:1 |
Values
| HEX | #1D334D |
| RGB | rgb(29, 51, 77) |
| HSL | hsl(213, 45%, 21%) |
| OKLCH | oklch(31.6% 0.055 253.5) |
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 #1D334D | 12.86:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #1D334D | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #1D334D text on white | 12.86:1 | AAA | Lc 98.9 | Preferred for body text |
| #1D334D text on black | 1.63:1 | 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 950.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A4C4EA
oklch(81% 0.064 253)
-
Step 400
400
#72A4E0
oklch(70.7% 0.103 253.6)
-
Step 500
500
#4B8CD7
oklch(63.1% 0.132 253.5)
-
Step 600
600
#2B74C5
oklch(55.6% 0.145 253.8)
-
Step 700
700
#1D61AA
oklch(49.1% 0.134 253.7)
-
Step 800
800
#1B508A
oklch(42.8% 0.111 253.6)
-
Step 900
900
#1C436E
oklch(37.8% 0.086 253)
-
Step 950
950 (this color)
#1D334D
oklch(31.6% 0.055 253.5)
#1D334D 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) | #28344E | 0.016 |
| Deuteranopia (no green cones) | #22304C | 0.011 |
| Tritanopia (no blue cones) | #00393C | 0.048 |
| Achromatopsia (no color) | #323232 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D334D
#1D334D
oklch(31.6% 0.055 253.5)
- #422D0E
#422D0E
oklch(31.5% 0.054 73.8)
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 #1D334D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.018
- Gunmetal #293241 ΔE 0.025
- Dark Blue Grey #1F3B4D ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.029
- Midnight Green #073B4C ΔE 0.030
- Marine #042E60 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.049
- Onyx #343A40 ΔE 0.051
Use #1D334D 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.