#274F72
Closest named color: Deep Sea Blue (#015482). oklch(41.5% 0.074 247.1), rgb(39, 79, 114).
Aa
White text reads best on this color (8.57:1).
About this color
#274F72 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.074 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.031 away. White text reads best on it, at 8.57:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.44:1 |
| White text | 8.57:1 |
Values
| HEX | #274F72 |
| RGB | rgb(39, 79, 114) |
| HSL | hsl(208, 49%, 30%) |
| OKLCH | oklch(41.5% 0.074 247.1) |
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 #274F72 | 8.57:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #274F72 | 2.44:1 | Fails | Lc 14.7 | Not readable |
| #274F72 text on white | 8.57:1 | AAA | Lc 89.3 | Fine for body text |
| #274F72 text on black | 2.44:1 | Fails | Lc -12.9 | 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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ABC4DC
oklch(80.9% 0.044 247.3)
-
Step 400
400
#7EA5CA
oklch(70.7% 0.069 247.5)
-
Step 500
500
#5C8EBC
oklch(63% 0.088 247.4)
-
Step 600
600
#4078A9
oklch(55.6% 0.097 247)
-
Step 700
700
#326591
oklch(49.2% 0.09 246.9)
-
Step 800
800 (this color)
#274F72
oklch(41.5% 0.074 247.1)
-
Step 900
900
#27445F
oklch(37.7% 0.058 248)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#274F72 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) | #405074 | 0.031 |
| Deuteranopia (no green cones) | #364971 | 0.023 |
| Tritanopia (no blue cones) | #00575B | 0.058 |
| Achromatopsia (no color) | #4C4C4C | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274F72
#274F72
oklch(41.5% 0.074 247.1)
- #67431A
#67431A
oklch(41.6% 0.075 66.4)
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 #274F72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.031
- Light Navy #155084 ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.043
- Dusk Blue #26538D ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- YInMn Blue #415A77 ΔE 0.048
- Twilight Blue #0A437A ΔE 0.049
- Charcoal #264653 ΔE 0.054
Use #274F72 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.