#1D2347
Closest named color: Oxford Blue (#1B263B). oklch(27.1% 0.067 274), rgb(29, 35, 71).
Aa
White text reads best on this color (15.17:1).
About this color
#1D2347 is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.067 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.027 away. White text reads best on it, at 15.17:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.38:1 |
| White text | 15.17:1 |
Values
| HEX | #1D2347 |
| RGB | rgb(29, 35, 71) |
| HSL | hsl(231, 42%, 20%) |
| OKLCH | oklch(27.1% 0.067 274) |
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 #1D2347 | 15.17:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #1D2347 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #1D2347 text on white | 15.17:1 | AAA | Lc 102.0 | Preferred for body text |
| #1D2347 text on black | 1.38:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B0BDF4
oklch(80.8% 0.079 274.2)
-
Step 400
400
#889AEF
oklch(70.7% 0.126 273.7)
-
Step 500
500
#6D7EEA
oklch(63.1% 0.162 274.1)
-
Step 600
600
#5664D8
oklch(55.5% 0.176 274)
-
Step 700
700
#4753BB
oklch(49.2% 0.162 273.8)
-
Step 800
800
#3A4498
oklch(42.7% 0.136 274)
-
Step 900
900
#313A79
oklch(37.6% 0.107 274)
-
Step 950
950 (this color)
#1D2347
oklch(27.1% 0.067 274)
#1D2347 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) | #132848 | 0.019 |
| Deuteranopia (no green cones) | #0F2446 | 0.019 |
| Tritanopia (no blue cones) | #092B31 | 0.060 |
| Achromatopsia (no color) | #262626 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D2347
#1D2347
oklch(27.1% 0.067 274)
- #302600
#302600
oklch(27.2% 0.056 93.9)
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 #1D2347, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.027
- Dark #1B2431 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.045
- Marine #042E60 ΔE 0.054
- Gunmetal #293241 ΔE 0.059
- Jet #212529 ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.060
- Rich Black #0D1B2A ΔE 0.065
Use #1D2347 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.