#273458
Closest named color: Prussian Blue (#1D3557). oklch(33.2% 0.066 267.7), rgb(39, 52, 88).
Aa
White text reads best on this color (12.22:1).
About this color
#273458 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.066 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.013 away. White text reads best on it, at 12.22:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.71:1 |
| White text | 12.22:1 |
Values
| HEX | #273458 |
| RGB | rgb(39, 52, 88) |
| HSL | hsl(224, 39%, 25%) |
| OKLCH | oklch(33.2% 0.066 267.7) |
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 #273458 | 12.22:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #273458 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #273458 text on white | 12.22:1 | AAA | Lc 97.8 | Preferred for body text |
| #273458 text on black | 1.71:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D1D9EC
oklch(88.5% 0.028 267.5)
-
Step 300
300
#B3C0E2
oklch(80.9% 0.05 268.8)
-
Step 400
400
#8B9FD3
oklch(70.6% 0.08 268.1)
-
Step 500
500
#6F87C7
oklch(63.1% 0.101 267.8)
-
Step 600
600
#5770B4
oklch(55.7% 0.11 267.5)
-
Step 700
700
#475D9B
oklch(49% 0.103 267.8)
-
Step 800
800
#3B4C7E
oklch(42.7% 0.086 268.4)
-
Step 900
900 (this color)
#273458
oklch(33.2% 0.066 267.7)
-
Step 950
950
#1D263B
oklch(27.1% 0.041 266)
#273458 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) | #263859 | 0.012 |
| Deuteranopia (no green cones) | #203357 | 0.011 |
| Tritanopia (no blue cones) | #103C41 | 0.061 |
| Achromatopsia (no color) | #353535 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #273458
#273458
oklch(33.2% 0.066 267.7)
- #443302
#443302
oklch(33.1% 0.066 87.5)
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 #273458, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.013
- Dark Blue Grey #1F3B4D ΔE 0.035
- Gunmetal #293241 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.041
- Marine Blue #01386A ΔE 0.042
- Marine #042E60 ΔE 0.045
- Midnight Green #073B4C ΔE 0.045
- Onyx #343A40 ΔE 0.055
Use #273458 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.