#273155
Closest named color: Prussian Blue (#1D3557). oklch(32.3% 0.066 270.6), rgb(39, 49, 85).
Aa
White text reads best on this color (12.67:1).
About this color
#273155 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.066 and its hue 271°. 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 12.67:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.67:1 |
Values
| HEX | #273155 |
| RGB | rgb(39, 49, 85) |
| HSL | hsl(227, 37%, 24%) |
| OKLCH | oklch(32.3% 0.066 270.6) |
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 #273155 | 12.67:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #273155 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #273155 text on white | 12.67:1 | AAA | Lc 98.6 | Preferred for body text |
| #273155 text on black | 1.65:1 | 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
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBFF4
oklch(81% 0.078 270)
-
Step 400
400
#839CEE
oklch(70.8% 0.124 270.1)
-
Step 500
500
#6680E9
oklch(63% 0.16 270.8)
-
Step 600
600
#4F67D7
oklch(55.6% 0.173 270.7)
-
Step 700
700
#4055BA
oklch(49% 0.16 270.5)
-
Step 800
800
#354697
oklch(42.7% 0.134 270.8)
-
Step 900
900
#2D3C78
oklch(37.7% 0.104 270.2)
-
Step 950
950 (this color)
#273155
oklch(32.3% 0.066 270.6)
#273155 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) | #233556 | 0.013 |
| Deuteranopia (no green cones) | #1E3154 | 0.013 |
| Tritanopia (no blue cones) | #14393F | 0.058 |
| Achromatopsia (no color) | #333333 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #273155
#273155
oklch(32.3% 0.066 270.6)
- #403200
#403200
oklch(32.3% 0.066 91.6)
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 #273155, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.016
- Space Cadet #2B2D42 ΔE 0.034
- Gunmetal #293241 ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.039
- Marine #042E60 ΔE 0.043
- Marine Blue #01386A ΔE 0.047
- Midnight Green #073B4C ΔE 0.048
- Onyx #343A40 ΔE 0.058
Use #273155 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.