#273451
Closest named color: Prussian Blue (#1D3557). oklch(32.8% 0.055 265.1), rgb(39, 52, 81).
Aa
White text reads best on this color (12.38:1).
About this color
#273451 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.055 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.016 away. White text reads best on it, at 12.38:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.69:1 |
| White text | 12.38:1 |
Values
| HEX | #273451 |
| RGB | rgb(39, 52, 81) |
| HSL | hsl(221, 35%, 24%) |
| OKLCH | oklch(32.8% 0.055 265.1) |
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 #273451 | 12.38:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #273451 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #273451 text on white | 12.38:1 | AAA | Lc 98.1 | Preferred for body text |
| #273451 text on black | 1.69:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E9
oklch(88.5% 0.023 266.9)
-
Step 300
300
#B4C1DC
oklch(81% 0.041 265)
-
Step 400
400
#8DA0CA
oklch(70.6% 0.065 265.8)
-
Step 500
500
#7189BD
oklch(63.2% 0.084 265)
-
Step 600
600
#5972A9
oklch(55.6% 0.091 264.9)
-
Step 700
700
#495F91
oklch(49% 0.085 265.3)
-
Step 800
800
#3C4E76
oklch(42.7% 0.071 265.1)
-
Step 900
900 (this color)
#273451
oklch(32.8% 0.055 265.1)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#273451 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) | #293652 | 0.007 |
| Deuteranopia (no green cones) | #253350 | 0.005 |
| Tritanopia (no blue cones) | #163A3E | 0.050 |
| Achromatopsia (no color) | #343434 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #273451
#273451
oklch(32.8% 0.055 265.1)
- #42320F
#42320F
oklch(32.7% 0.055 83.9)
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 #273451, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.016
- Dark Blue Grey #1F3B4D ΔE 0.027
- Gunmetal #293241 ΔE 0.028
- Space Cadet #2B2D42 ΔE 0.031
- Midnight Green #073B4C ΔE 0.038
- Onyx #343A40 ΔE 0.046
- Marine #042E60 ΔE 0.051
- Marine Blue #01386A ΔE 0.051
Use #273451 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.