#274A64
Closest named color: Dark Grey Blue (#29465B). oklch(39.5% 0.06 242.5), rgb(39, 74, 100).
Aa
White text reads best on this color (9.33:1).
About this color
#274A64 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.060 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.017 away. White text reads best on it, at 9.33:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.24:1 |
| White text | 9.33:1 |
Values
| HEX | #274A64 |
| RGB | rgb(39, 74, 100) |
| HSL | hsl(206, 44%, 27%) |
| OKLCH | oklch(39.5% 0.06 242.5) |
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 #274A64 | 9.33:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #274A64 | 2.24:1 | Fails | Lc 12.5 | Not readable |
| #274A64 text on white | 9.33:1 | AAA | Lc 91.4 | Preferred for body text |
| #274A64 text on black | 2.24:1 | Fails | Lc -10.9 | 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 900.
-
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
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A8C5DC
oklch(80.9% 0.045 242.1)
-
Step 400
400
#79A6CA
oklch(70.6% 0.072 243.1)
-
Step 500
500
#5490BD
oklch(63.1% 0.093 242.6)
-
Step 600
600
#3779A9
oklch(55.5% 0.1 243.1)
-
Step 700
700
#286691
oklch(49.1% 0.093 242.5)
-
Step 800
800
#235376
oklch(42.6% 0.078 243.2)
-
Step 900
900 (this color)
#274A64
oklch(39.5% 0.06 242.5)
-
Step 950
950
#152938
oklch(27.2% 0.038 242.4)
#274A64 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) | #3F4A65 | 0.031 |
| Deuteranopia (no green cones) | #364464 | 0.024 |
| Tritanopia (no blue cones) | #005053 | 0.047 |
| Achromatopsia (no color) | #474747 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274A64
#274A64
oklch(39.5% 0.06 242.5)
- #5D3F22
#5D3F22
oklch(39.5% 0.06 63.6)
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 #274A64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.017
- Charcoal #264653 ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.045
- Deep Teal #00555A ΔE 0.048
- Dark Teal #014D4E ΔE 0.051
- Twilight Blue #0A437A ΔE 0.052
- Light Navy #155084 ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.053
Use #274A64 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.